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[ indistinct talking on tv ] [ snoring ] [ male announcer ] vicks nyquil cold and flu. the nighttime sniffling, sneezing, coughing, aching, fever, best sleep you ever got with a cold...medicine. ♪ jason dead? that's just horrible. his mother collapsed when we told her about him. i can only imagine. i doubt that. you don't think i had anything to do with it? well, he was shot in the head at a bus station within 30 minutes of you buying him a ticket. as far as we know, you were the last person to see him alive. i think, uh... i think i better talk to my lawyer before we continue this. yeah? why don't you ask them in there what they're gonna think about you recruiting their kids to hustle cards, leonard? we know all about you, professor. about your dreams of putting your crew together, about your past gambling debts. i don't know what you're talking about. don: no? well, why do phone records put you in touch with brewer, chernov, and nadal within the last six months? you finally put together a team, and now two of them are dead. i didn't hurt jason or yuri.

i could never do something like that. where is ignacio nadal? i don't know. is he on the run from somebody? look, these kids-- they came to me. they found articles i'd written and a system i developed. what, you taught 'em, and you bankrolled 'em, right? until last month, yes. why? what happened then? they told me they found some new backer. somebody with substantially more money. and you just took that in stride? i didn't kill jason brewer. all right, leonard, why don't you tell us what you were doing in the bus station then? he needed help. he was on the run, and his parents are out of town. he had nobody that he could turn to. i would never do anything to hurt these kids. i was their teacher. megan: we need to find ignacio nadal. we put a trace on his mom's phone. we're monitoring his cell provider. he makes one phone call, we're on him. what about friends or classmates? aside from chernov and brewer, this guy's pretty much a loner. colby? hey, guys. i think i got something. remember that girl the other night who was with ignacio on the tape? mm-hmm. brandi?

with an "i." yeah. check this out. she was not just with ignacio. she was there other nights. megan: she's with all three guys? yeah, all of them. see, i went through jason brewer's address book. i found her number. it's her work number anyway. megan: the bareback club? colby: she's the main attraction. so, who do we think should do that interview? ( hip hop music playing ) check out the midday crowd. colby: looks like a bunch of dads got separated from their families on the bus to disneyland. ( music continues ) i'm sensing premeditation. we're looking for brandi, and don't start pouring.

i'll tell the dj to cut the music. whoa, hold on a minute. one song's not gonna kill anybody. relax, have yourself a soda. let the disneyland dads have one last look. yeah, i was there that night with ignacio, but i left early. so you knew him? i know a lot of people. how about people who get murdered? ignacio's dead? colby: not yet. i don't understand. we saw the surveillance tapes. you were there with two other guys besides ignacio. ignacio's friends. they're dead. oh, my god. we're trying to make sure that doesn't happen to ignacio. have you seen him? has he tried to call you? why'd you leave early that night? i had another date?

did that date have a name? he's married. we'll be discreet. and ignacio-- was he a date, also? not exactly. well, then be exactly. i provide a service. not that service. what, were you their math tutor? they needed me to pull off their act. with me on their arm, it gave them some credibility. so you knew they were counting cards? nobody's that lucky. so, what did you get out of the deal? money. a lot of money. did you notice anybody following them? anybody watching them? you're up five, ten grand, people are watching. i told ignacio some day they'd get made. so you think that's what happened to them? nobody likes to lose money. office getting cramped?

uh, it's being cleaned. after months battling the maintenance department, you know, i gave in. how's it going? ugh! i'm having trouble isolating the students' gambling histories, as we discussed. to find a pattern that'll yield the identity of the backer. maybe the killer. no luck so far. you know, i-i could really use your help, larry. lawrence. hey, did you two know that yuri chernov was a tasker scholar? he was the first member of his family to go to college. jason brewer-- his iq is off the charts. ignacio nadal may be the most, i don't know, gifted of them all. charlie: well, don't you take solace in knowing that clearly, you're not the only brilliant thinker to fall under the allure of gambling? i need your brilliant thinking right now. i'm-i'm... i-i just can't make sense of these figures. if i could be as vague and opaque as larry, i'd say if the new backer is behind these killings, then maybe you need to look behind these numbers.

yeah, she's right, charlie. it's like... it's like money moves. like planets, it's very movement reveals truths. you really think these kids are laundering money? on a pretty big scale. so they take money they couldn't account for legally, and use gambling to legitimize it? they use the card club as their washing machine. look. look how the money flow altered a month ago, when i believe a new backer came onto the scene. these kids changed the way they purchased chips. and in any 24-hour period, they never exceeded $10,000. right, 'cause they stayed below the irs reporting limit. so there's no record of the cash they started with, and a few thousand winnings doesn't really seem like a big scam. that's where they were smart. we have three students. right. with multiple ids. charlie: which they used to create three separate card club player accounts.

so, we have three students with three separate player accounts cashing out $9,900 a night. that's $89,100 per visit. playing six or seven days a week for a month. so, that's got to be at least, what... i mean, it's over two million, right? to be precise, in one month, that's $2,138,000. so where's all that money go, back to the backer? they wired their money from the player account to an offshore account where... right, it disappeared. unfortunately. so we can't trace it to the backer. this kid ignacio is the only one who can tell us where it is. which i'm sure the backer knows, as well. keurig has a wide variety of gourmet coffee and tea to choose from. keurig is the way to brew fresh, delicious coffee in under a minute.

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this is it... ♪ charlie: you ever been to one of these? a few times. my dad's dragged me. he's into it. my mom always takes away his credit cards before we come. table six just went to a plus 18 count. is that good? oh, yeah. i've got to tell you, i'm feeling so uncomfortable about this. larry, all you've been telling me is that the only way to understand this game is to sit at the blackjack table and play the game. charlie's right, larry. the students were doing very complicated equations in a high-stress environment. you know, i need to feel how they felt. i need to play how they played. i-i need you to teach me. i don't think you understand just how truly narcotic this is for me. can't you just see this as-as field work? unfortunately, it is a poppy field. i'm warning you both, we're standing at the precipice. this is the event horizon of a black hole.

♪ there's just one place for me ♪ ♪ this is it ♪ yeah, just one place to be ♪ this is it ♪ i'm so happy to be here ♪ ♪ when i look around, it's clear ♪ ♪ yes, it's perfectly plain to see ♪ ♪ there's the cream of the crop ♪ ♪ this is it ♪ on my list at the top ♪ this is it ♪ couldn't ask for nothing more ♪ ♪ like a hope that i adore ♪ if there's one place i fit ♪ ♪ this is it... well, nothing like the sting of over-oxygenated air and endless pecuniary promise. you know, this used to be about demonstrating the power of mathematics. okay, well, there is that, too. i think we should call it a night. what?! yeah, let's get out of here. how about field research?

come on, we got table four over there just ripe for the picking. what is he doing with those cards? larry: some clubs introduce a fresh deck at the dealer shift change. just prevents players from marking the cards. people actually do that? i know players who can cut a multi-deck stack at exactly 52 cards. some players do other feats, like shuffle-tracking. shuffle-tracking? yeah, well, no shuffle by human hand is exactly perfect. some cards remain together. and the players who memorize the order look for those same groupings in the next shuffle. that's why they're using machines now. how do those machines work? larry: auto-shufflers, they use random number generation to create a random distribution of cards. interesting. because what do we know about random distribution? it's impossible for machines to create truly random sequences. these kids cracked the code for how an auto-shuffler shuffles. the sequences found in jason brewer's notebook were in fact card-counting cheat sheets, exploiting a weakness in the random number generator found inside this box.

david: that's the auto-shuffler we found in jason brewer's apartment. charlie: the students used it to adapt a card skill called shuffle-tracking. yeah, when dealers shuffle, there are little runs of cards that stay together. so the players will look for them to reappear. charlie: and clubs try to prevent this by using the auto-shuffler. but, as we all know, machines aren't perfect. and the kids took advantage. how'd they do that? first, they must have analyzed this mechanism. so an auto-shuffler shuffles using a system of multiple shelves, depositing the cards on shelves in a seemingly random order. but the shuffles aren't really random, because the random number generator controlling the auto-shuffler is governed by a fixed algorithm. and these kids figured all that out? that's not all they figured out. this specific card club had a policy. on dealer shift changes, they would introduce new decks, sealed straight from the factory. now, these cards are in a preset order. now, knowing this staring order, as well as the algorithm enabled these students... david: to know the cards that were coming before they were even dealt. that kind of math problem is way beyond our three students.

their teacher was leonard philbrick. he had to have helped them. oh, he did more than that. i just got off the phone with the auto-shuffler company. guess who they hired as their math consultant. what, philbrick? he created the auto-shuffler's algorithm? megan: yeah, which he could have then given to ignacio and the students, right? which means that he could have easily designed an algorithm that had a much shorter period to follow. thousands of steps, instead of billions. okay, so they were cheating, which gives the card club motivation to go after them. megan: yeah, but let's not forget about philbrick. all that "i was their teacher" stuff goes out the window, if the students stole the scam and ran with it. what was i supposed to do, admit i stole a trade secret? used it to cheat a card club out of thousands? would have been a start. you could have used it as mitigation at your murder trial. i told you i didn't murder anyone. yeah, well, leonard, i'm guessing you know who did. one way or another, you're involved in this, and you're not telling us, okay? so i'm telling you, anything happens to that kid nadal, that's three murders i'm connecting you to. do you understand that? look, the kids got caught with the auto-shuffler, all right?

by who? marius. a club manager. next thing i know, he's at my door. oh, so the kids gave you up. i warned them not to get greedy. knowing that shuffle, you can make returns of 200, even 300 percent every few hours. yeah, but not without someone noticing. marius caught them, day one. and that's how the dirty money came in. he's got connections with drug distributors on the east coast. so you made a deal-- your asses for the money laundering scam. what else could we do? all right. so what went wrong? well, the kids got cold feet. they wanted to come forward, admit to the gambling fraud, the money laundering. what happened then? marius found out? the recent high roller robberies presented a perfect opportunity-- a cover for yuri's murder. as for jason, marius must have followed him when he came to see me. that's got to mean ignacio is next. i guess he doesn't want to leave any witnesses.

hey, fbi. where's marius, the manager? ( sniffs ) smell that? shots fired. yeah, here we go. i got a dead body here. lock this place down.

don: all right, so marius isn't the killer. so we have to figure out who would want marius dead. well, how about the people he was laundering for, these east coast drug dealers. i mean, if you think about it, marius got a bunch of college kids involved in money laundering, only he loses control of them. so what, he killed them all to keep it quiet? obviously he didn't keep them quiet enough. well, we know he's going after ignacio next. yeah, 'cause he's the one last witness. you, why are you so quiet over there? it's statement marius gave to the lapd. the night yuri chernov was murdered, he says he started work at 7:00 p.m. so? what are all these calls coming out of his office first thing in the morning? maybe somebody else was using his office. colby: maybe he was just lying. don: yeah, but why would he lie about that? maybe he didn't want anyone to know he was at the club

when yuri arrived. constrained dynamics, right? chernov's car was parked in a security camera blind spot, right? yeah, the whole corner was obscured. all right. do you have an overview of the card club parking lot? chernov arrived late afternoon, well before the evening crowds showed up. why the hell would he park his car this far away from the club's entrance? that doesn't add up. more than that, it defies mathematical principles. constrained dynamics is used to analyze everything from traffic flow in supermarkets and malls to the mechanics of granular matter... meanwhile, back in the parking lot? applying constrained dynamics, the parking lot should have filled up in a predictable pattern starting with the spaces closest to the entrance and fanning out like a wave, like, like a wave. given the time that yuri arrived, i see no reason why he parked his car this far away. unless he wasn't the one who parked there. all i did was park his car right. in the back of an empty lot. hey, willie, you want to be charged as an accessory here, huh?

look, the man paid me 500 bucks to park the dude's car by the fence. what man? marius? another guy. but i saw him talking with marius that morning. before that, he was with the dude who got whacked. you're saying the guy that paid you knew the victim. yeah. a latino dude, a young guy. came to the club all the time with two friends. that day he was wearing a soccer jersey and a lot of jewelry. and a lot of jewelry. so ignacio. he played both of his friends and philbrick and marius? and if he's killing witnesses... ...he's got one left. philbrick's heading towards his car. i've got philbrick.

suspect's acquired. he's moving in. where is he? he's on the other side of the car. he's tracking philbrick. i got him. mr. philbrick? if you have a second, can i talk to you on my calculus grade? this is not a good time, karen. but i really need... karen, please walk away now! you guys, move, move! keep your hands where i can see 'em. make a move for that gun and you're dead. you set me up. colby: yeah, just like you set up your friends. and then you were going to kill him. up to your knees. put your hands behind your head slow. why? why? why not? you told us the money was there, remember? all we had to do was take it. if yuri and jason hadn't punked on me, it would have worked out, too. it looks like you gambled and lost, pal.

well, i see once again you've escaped all responsibility for your actions. oh, leonard, you must be very proud of yourself. larry fleinhardt. well, what's it been, 25 years? 22, leonard. i see your name in journals. academic life has treated you well. well enough. what are you doing here? i'm just waiting on you. how could you do it? you know what the game did to us. how could you visit such a fate upon young gifted minds? those kids came to me. and instead of sharing your wisdom, two are dead and another's going to prison. these kids were a second chance for me. come on. don't tell me you don't remember what it felt like to beat the house at their own game. you were the best i ever saw, fleinhardt,

and you just walked away. that's right. i never looked back. when the numbers are running you, instead of you running the numbers, it's time to take your money off the table, leonard. men make choices they have to live with. well, you know, i know two who will never get that chance. so philbrick cut a deal: two years probation. alan: he got lucky. oh, yeah, if you want to call it that. again, i apologize for not coming forward sooner. ah, it's all right. no, i was tormented. i was mortified. look, you stepped up ultimately. larry, do you realize that without your help, we would have never figured out those students were money laundering. not to mention giving charlie a taste of real action at the tables. what are we talking about blackjack for? let's play a real game. a real game? poker! all the math in the world is useless against a good read, steady nerves. i have had enough action to last a lifetime. besides, poker is for professional card players and underemployed celebrities.

don: yeah. i'm out, too, actually. the last time i played with you, i ended up eating mac and cheese for a week. come on. we'll go sit outside. you can tell me about the gambling days. yeah. yeah. i guess it's you and me. texas hold 'em, no limit. what do you say we bet the house? you're not, you're not serious about betting the house. i'm always serious. captioning sponsored by cbs and paramount network television captioned by media access group at wgbh access.wgbh.org

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