sure, it seems reasonable to at least attempt to... i know, i know, charlie it's terribly disturbing. i understand that. correct, so the best thing i can do is find useful details to help don catch this guy and perhaps locate this little girl. charlie, this is not a career that you've chosen. you don't have to do this, you know. what are you saying, that i should just walk away, right? dad, what kind of person would do that? you wouldn't do that. this is not about me, charlie. the girl in the picture reminds me of a kid i knew... jessica cartman. jessica cartman? you mean the kid who used to live two blocks away from us? yeah. well, what happened to her? i don't know, i just always felt like something was up with her. charlie, you were only a kid at the time. right. i'm not anymore. i got to go. we know it was encrypted, we just can't tell if it was sent over the internet. yeah, well, this'll cross-reference her face against our database

of over a million images of exploited kids. did you say a million? yeah, and growing. see, this program matches facial characteristics similar to that of a dna test. right. ( beep ) damn, that's too bad. she's not a known victim. so, then, what will you do now? i mean, what happens? well, the photo gets analyzed. we've had some luck matching beds in the background, finding repeat locations that way. how long, you think? it's gonna be a few days, man. we got backlogs, but i'll try to run it through quick as i can. yeah, i appreciate it-- do what you can, all right? no problem. megan: i want to know if you have property leased to derrick lamberg in sonora, mexico. he's a fugitive. yes, i'll hold. excuse me, charlie, hold on a second, man. we just got a hit on a delivery service. they picked up nine packages at the meth house this morning. i'll let you know if it's anything. that's great. hi. what you got? i was able to detect a reflection of what i think is a man in the glass of the window. how much can you see? only an outline, but there's definitely a presence.

of course there's a presence, charlie, somebody took the picture. what else do you have? i need to work with the crimes against children office, show them what i have-- enlargements of carpet, bed, drapes... charlie, i need something concrete. this guy is going to skip to mexico and game over. yes, i understand. you feel, because of agent gallagher's death... this isn't about how i feel-- we need to get this guy, charlie. yes, i'm here. anything? yes, i have enlargements from the photograph that... the chemicals from the bust were manufactured in sonora, mexico. i'm checking to see if he's leasing anything there, and i gave his description to the border patrol... i know, average white guy-- could be anyone. charlie, there's nothing else you can do? as i stated, i have enlargements from the photograph. i'm going to give them to the crimes against children squad, okay? i already handed those off-- give me, come here. give me these. what's going on? look, we have a system for finding these kids. just let the system do its job. your system's incomplete. charlie, give me a break-- it's the best in the world. what are you talking about? complex systems require redundancy:

computers, the military, human brains, but not the fbi? why don't you want me to find this child? what are you talking about? that is so unfair. i want to find the kid as much as you do, and i want to find the perpetrator. tell me what's bugging you so much about this photograph? this child has shown up in front of us for a reason. she may lead us to lamberg-- even if she doesn't don, i need to take action to find this little girl. that's what i'm doing, i'm taking action. no, you're not. yes, i am. you're right about that delivery service. we grabbed 20 pounds of meth and got a hit on a wire tranfer for lamberg. great, let's get on that. man: they've been missing since yesterday. i'm really concerned. i'd like to file a report. agent romero? yeah? i'm charles eppes, don eppes' brother. i'm working on a photograph that i believe he also shared with you. charles, yeah. don brought in something in here earlier. i have some enhanced imagery. i'll put it in the databese. what are the chances we can find this little girl? let's go in here. my wife's an addict. i'm scared she might be trading my little girl for drugs.

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zero. monistat both relieves your symptoms and cures the infection. get the cure. get monistat. ( banging and clanking ) ( door closes ) charlie? no. hey, dad. it's me, don. ( mumbling ) sorry to wake you. where is he? oh, i think he's at his office, working on your case. oh, yeah? good. i mean, we've hit nothing but dead ends and he doesn't have his head in the game at all. you know it's 1:00 in the morning? yeah, so what, i'm working. listen, hard ass, i know he's got a job that's he's doing, i know all about that... it's just that this case is messing with his head. you know? it's reminding him of something that he's feeling guilty about. why? what, did he do something i don't know about? no... it's not what he did, it's what he didn't do. he saw this girl, one time, and she was in trouble and he... he didn't save her i mean, how the hell could he, he was a child at the time. but, you know, being charlie, he's got a big heart and he... feels responsible. and now, to atone, he's banging his head

against a door that'll never open. you're never going to find this girl, are you? well, dad, you know, i mean, the odds are against it, but he's got to learn, you know? everyone gets emotional. you still gotta do your job. listen, don, this is a life that you've chosen for yourself i'd rather you not choose it for charlie. what'd you say, he's at the school? i couldn't get him to come home. dad, let me explain something. this guy killed an agent, okay? we missed catching him by minutes. he's on the run, we don't have a lead. so, i'm sorry, but i have to push charlie. that's the way it is. you don't have to push him, he's doing it. i've got to go to bed, i've got an early meeting. good night. larry: rigel is particularly bright tonight. mm. if he using advanced coding to hide his child pornography, then he's a... yeah. a.) he's an intelligent pedophile; b.) he's paranoid; c.) he's cautious; d.) he's... i don't know, what is "d"? "d" is that he'll apply these same techniques to other information he wants to conceal.

yeah. yeah, yeah, yeah. i see what you mean. so, one might assume a ratio of most dangerous information hidden with most advanced coding, and... the entire hard drive's encrypted. or partitioned. a phantom hard drive. larry, come on. yeah, yeah. we gotta get to the computer lab as fast as we can. i know a short cut through metallurgy. ( typing rapidly ) ( computer beeps ) there's only two gig of storage here. yeah, i tried the fdisk command. it's rebooting, i'm guessing. a second partition, huh? there's got to be an executable file to access the hidden operating system. don: what's the deal-- there's more people in here in the middle of the night than at 10:00 in the morning. looks like the fbi. yeah, less distracting at night. deeper thinking. yeah? what are you guys doing? trying to follow the logic of an intelligent, paranoid pedophile.

lamberg created a phantom hard drive. what do you mean, it's there, but you can't find it? exactly. it's a mathematical illusion, like the magician's disappearing trick. the computer's hard drive looks perfectly normal at first glance, just like the magician's box. but there's a hidden place-- an unseen, secret compartment. lamberg did the same thing with his computer: he hid his data in a separate, secret place. it's a trick, you know? it's a very clever computer partition trick. don: so what do you think, can you find it? larry: i think.... i just did. okay, here we go. hmm, just as we thought, huh? all the data's been encrypted. don: well, come on, charlie, you with all your nsa experience-- you can't break that? wall, this discrete logarithm provides quite an obstacle. you know what, larry, that would really only be a problem if lamberg hadn't based his cryptosystem on a super-singular curve. don: you guys think he has, what, like a background in math or intelligence or something?

nah, it's downloadable from the net; high school kids are encrypting files from their parents' prying eyes, even as we speak. i got it. wow, okay. some of the data has been damaged in the explosion, but there's fragments we can read. our despicable felon is a proud a member of... "the long beach gun club." oh, that's a good lead. that's great. hey, call me if you get anything else on him. yeah, we'll keep looking. loop me in to what you know, it might help my search. hey, colby, it's me. yeah, long beach gun club, okay? apparently, lamberg was a member. so, wake up whoever you have to wake up, get his file, his photo-- anything you can, all right? all right, guys, thanks. larry: well, i opted for sending megan seven aromatic white tuberoses-- anonymously. well, what good is it if she doesn't know it's you? well, i'm a physicist, charles. i believe she'll still feel the cloud of virtual possibilities surrounding her, even as she's not yet identified the particle. are you talking about "vibes?" yeah, well, somewhat crudely put, but...

( ringing ) oh, wait. yeah, that's my fax machine. i asked don to send me lamberg's photo. curiosity-- not great for cats, but very good for scientists. you know, i've seen this guy. is that the infamous lamberg, huh? mm. he was just in the fbi office.

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i don't understand. you're saying lamberg was here? he was in the crimes against children office. charlie, it doesn't make any sense, he's a fugitive. i mean, why would he do that? i saw him in romero's office. he was there. ( sighing ): all right, i'll check it out. i'll get back to you. you're not going to believe this. charlie says lamberg was here. what do you mean, here? in the building. it's crazy. why would he in the building? in the crimes against children office. so why don't you check their records for any white males who may have made a statement, or a complaint... i mean, maybe they left a contact number. i'm going to check the surveillance tapes in and out of the building. okay. are you're sure it was him? charlie: infinity. it's the same guy. aristotle said that infinity is the lack of limitation. larry: which, i suppose, could be a definition of evil.

david talked to an agent in the crimes against children office-- charlie was right, she's linked. it's the same girl. what, so, lamberg goes in there and files a complaint under an alias against his ex-wife? claims she stole the daughter? he's working a scam to get us to find the girl. he even left a cell phone where he can be reached, which david traced to the weber motel on hoover. all right, well, what are the chances he's still there? a pedophile obsessed with his prey won't leave without her. this is lamberg's weakness. he's going to sit and wait for that call telling him that we found her, and then he's going to show up and "save" her from an abusive mother. and if nobody knows what he looks like, he just comes across as another distraught dad. gets the girl, he skips to mexico. this guy's got some set on him. you all right? you up for this? oh, yeah.

hey, are you the cops? fbi. do you work here? yeah, i'm the manager. you guys are feds? that's right. and you're here about my truck? your truck? yeah, it got stole about 30 minutes ago. no, we're not here about your truck, sorry. have you seen this man? oh, yeah, he came in earlier, looking for his daughter. wait, she's here? no, not no more, she ain't. he took her? who? this man. no, no, no, no. he came in, asked for the room number, and next thing i know, i see my truck driving away. so this guy stole your truck? no, the woman did. crazy bitch. she must have seen him in the office. where is he now? i guess he took off after her. what was he driving? a new bmw, very slick. let's put out an apb and tell them that they should be looking for-- what color is his car? blue. blue-- if be hasn't caught her already, got it. he'll be following her. will you show me where the mother and the daughter were staying? oh, that's...

i don't understand. what was he doing in this office? he was using the fbi to help him find his daughter. she's his daugther? unfortunately, it's not that uncommon for an abusive parent to accuse the innocent parent, and then use the authorities to help track down the child. her name's libby. he was here filing a complaint against his ex-wife, a woman named michelle collins. well, i found fragments from dozens of e-mails he sent to her-- to libby. let me see. hey, where's this? this stuffed animal is from the other picture. where'd you find this? the motel. don: she was on the run with her daughter, presumably to get away from lamberg. i tried to tell you she needed our help. yeah, charlie, look... didn't i tell you that? and i told you there's more at stake than just her. i got a dead agent and a guy who's putting millions of dollars worth of the worst drug in years out on the street!

i want to find her as much as you, but i'm tired of this! okay, guys, looking at these e-mails, he's totally obsessed with her. he's not gonna leave without her. charlie: well, then we've got to find her before he does. what can i do? i'll let you know. i have to do something. hey, check this out. it's the stolen truck. we need to call lapd. we need them to tell them to look for lamberg's blue bmw. you get out there. i'll call lapd. hey, charlie... what? stay here. ( sirens wailing ) ( tires squealing ) officer ( on p.a. ): michelle collins. the road is a dead end. get out with your hands up. officer: get your hands off the wheel and step out of your truck! don't shoot us! my child's in the car! what are you doing? suspect's got our missing girl. suspect? michelle collins. she's wanted for parental kidnapping charges and drug trafficking. that's lamberg's wife. where's the other car? the blue bmw?

lamberg killed an fbi agent. your suspect is a victim! hey, lower your weapons. david: we called it in. nobody in your office notified you? no, we're working on a tip. that's lamberg. romero, he's been using you to help him find his daughter. turns out this guy's a pedophile. are you okay? michelle: he was chasing us. i'm sorry, you can put your hands down. come out of the car. oh, you must be libby. it's okay, honey, it's safe now. oh, yeah. come out with me and mommy. oh, and you had to come out of the house in your pajamas. let's get you a blanket. here with mommy. thanks. come on up to our car. if lamberg knows we have his daughter, there's no reason for him to stay. no. he's gone.

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megan: he's got to get rid of that car. he can buy one, he can steal one. guy like this wants to move faster, you know? he wants to be more invisible. i mean, we've got agents at every airport. yeah, but lax has all that heavy security. maybe ontario. union station. in one of his e-mails, he talked to libby about train rides. i'll go. no, come on, megan.

you haven't had a break. you haven't had any sleep. nobody's had any sleep. i'll take colby. all right. you know, i didn't mean to imply earlier that you weren't doing everything you could for this child. you should go home, too. we haven't caught him yet. michelle: i walked in on derrick messing with libby, and i knew i had to get my act together. he tried to offer me more drugs, you know, to shut me up. hey. but i ran away, me and lib. the mother's not stable. mm-hmm. she's only been off meth for three weeks. i don't think that we can leave the girl in her custody. don: okay, wait, hold on. you know, i think she made a pretty heroic effort for that kid. i understand that, don... where else can she go? foster care. ah, no. i don't know . she tried to save her kid.

that has to count for something. didn't your office seize most of lamberg's assets? yeah, i filed the order myself. why can't the u.s. attorney's office use those assets to help his kid, help them both get on their feet? if we can prove he abused her... he had pictures of her on his computer. come on, her bedroom was in a superlab. i mean, they test her, we're gonna find traces of meth in her blood, in her hair. okay, let me talk to her. please. ( strumming guitar ) ( woman speaking indistinctly over p.a. system ) colby, what do you got? nothing yet. why, you see anything? not yet. yeah, i'm starting to think maybe the airport. just keep looking.

where's my mom? nadine: she's just right next door. so your dad never touched you? no. he never hurt you? no. stop asking me. see how her eyes flicker and she looks to the right? she's lying. nadine: we want to stop him from hurting you, libby, or anybody else. are you afraid of him? look, you don't have to say anything. just... you can nod your head yes or no. are you scared of him? yeah. okay. what about your mom? are you scared of her? no. can i see her now?

sure. this can be overcome, right? it's possible for this child to grow up to live a normal life? we're doing everything we can to help her, right? he just got up. tan cap, sunglasses. he's walking towards me. i got him. hey, buddy, you got a light?

i said, you got a light, derrick? get on your knees, bitch! colby: put your hands behind your head. what's happening? is everything all right? fbi, it's okay. what's going on? shut up! there's been some mistake. yeah, i should've put one in your head while i had the chance. please stand up. hey, we got him. you sure? yeah, they're bringing him in now. you were right, he was at union station with a ticket to san diego. he was gonna just walk across the border, right out in the open. there he is now. hey, guys. megan: hey. good job. i want my lawyer, immediately. take him to room one. hey, hey! come on, charlie, i'll give you a ride home. come on.

see ya. you need to get some food in you, charlie, and some sleep. you've been up for 36 hours. you ever want to kill somebody? a couple of times. like today. there was this girl in my neighborhood, when i was a kid. jessica. she never said anything about it, but i knew. i could tell by watching her with her father-- the way he would keep his hand on her shoulder. she hated it. and she looked at me. and i knew, and i never did anything about it. can you believe that? yeah. you were just a kid, charlie. doesn't matter. i knew. you would've done something.

i didn't. i don't know what i would've done, or what don would've done. no one ever knows what they're gonna do in a situation until they're there. i know i did nothing. well, why don't you do something now? why don't you find jessica and see how she's doing? i could do that. sleep on it first, though. mm, i'll go talk to her. yeah. that's an action i can take. thank you. how do you deal with this stuff? ( sighs ) we did a good thing today. we did a good thing. captioning sponsored by cbs and paramount network television

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