amita, i don't think the equation's the problem. then the database of patients waiting for transplants must be an incomplete set. you know, if we consider we're dealing with a black market, it's possible, even probable, that we're looking for a patient who cannot obtain an organ in the normal way. so they wouldn't be on any official lists. yeah, but it's much more likely that santi isn't a match for her sister. i was hoping this would work. yeah, well, we all were. well, we aren't giving up. wow, this doesn't look good. megan: i assume you guys haven't found anything yet. no. well, you know, we're only working with a 25% chance of success to begin with. and absence of proof is not the same thing as a proof of failure. yeah, she's right about that. she's right about what? we don't know that santi isn't a match for her sister. we only know that we aren't getting any results from this current set of patients. well, david and colby found some data on the patients in tolchuk's computer at the morgue. let me see. this is a potential list

thought you were calling amita. i was, but i think i just figured out a way to help don catch his fugitive. i have all these computers networked for you. i have 50 phone numbers from ben ellis' phone records ready to go. that's awesome. here is the program with the algorithm that i constructed on amita's laptop. do you mind telling me what we're doing with it? oh, we're just gonna find ben ellis by identifying his call pattern. but he hasn't used his phone since he got away from david and colby. yeah, doesn't mean he hasn't been making any calls. oh, like if he borrowed a phone or used a pay phone? yeah. and this algorithm will help us identify his call pattern hidden amongst all the other calls made on that phone. all those other calls are like a symphony. ben's calling pattern is like a series of notes. if we know the notes, then we can identify his tune even if it's being played on another instrument. but we need to do that while listening to the entire symphony. so what do we do now? we just wait, and the progra

amita: what was stolen? it was a mark five dna synthesizer. is that serious? a dna synthesizer has many functions, most of them positive: genetic analysis, anthropological study... but it's also used to sequence microorganisms-- invertebrate vectors of infectious diseases-- bacterial pathogens... wait a minute, charlie, you're saying this thing could make a disease? no, it can't really make them. but with the dna and protein sequence data it contains, it could... customize them. and by "customize," you mean... weaponize. megan: these burglars cut through the roof. they came in through the air ducts. what about these sensors? why didn't they trip? they're passive infrared motion sensors. they're body temperature sensitive. they used these to jam them with high and low temperature signals at the same time-- it gave it a false read. so they had the place cased pretty well ahead of time, right? really well cased. these floor bolts-- they're only unlockable by a biometric iris scanner. and there's no sign of forced entry. yeah; inside job. looks like it. what exact