Episode 1.01 Pilot
Directed By Davis Guggenheim, Mick Jackson
Written By Cheryl Heuton, Nicolas Falacci
Air Date January 23, 2005

Episode Summary
When several women are found raped and killed, Don asks his genius brother Charlie to help find the killer. Charlie must gain the respect of his brother’s team though. They like him, but they are pretty unimpressed when his first ‘killer-finding algorithm’ pinpoints a local stadium as the perp’s home. The murders continue, and Charlie becomes increasingly frustrated at the fact that the math isn’t working. Finally, he comes up with a revised equation that sends the agents to the home of one Roland Haldane. While talking to Haldane, Don becomes convinced this is their perp and while looking at the bottom of a knife discovers the marks the rape victims have been branded with. Terry is looking around outside and discovers a fourteenth victim; she is suffocating but still alive when Terry finds her. Roland is shot by Don when he tries to get away. Then Don lets Charlie know that his equation was right, since Roland had moved out of the old neighborhood a few weeks back.

Episode 1.05 Prime Suspect
Directed By Lesli Linka Glatter
Written By Doris Egan
Air Date February 18, 2005

Episode Summary
When a five-year-old girl is kidnapped from her birthday party, Don and Terry lead the investigation, but must rely on Charlie’s help because the girl’s father, Ethan, is also a mathematician. Charlie realizes the kidnapper’s motive when Ethan reveals he is close to solving Riemann’s Hypothesis, a difficult math problem. If solved, the solution could not only earn him $1 million, but could break the code for internet security and unlock the world’s biggest financial secret.

Episode 1.06 Sabotage
Directed By Lou Antonio
Written By Liz Friedman
Air Date February 25, 2005

Episode Summary
While consulting with the NTSB at the scene of the wreck, Don learns that this tragedy is one of a series of recreated accidents involving railroad negligence. As is the pattern with the previous train wrecks, an undecipherable numerical code is left at the site, which Don recruits Charlie to solve. By breaking the code, Charlie is able to establish that this accident was a recreation of a deadly wreck that left only one survivor several years ago. Don’s investigation leads him and his team to a dangerous standoff with their suspect, who has surprising ties to the railway system.

Episode 1.07 Counterfeit Reality
Directed By Alex Zakrzewski
Written By Andrew Dettmann
Air Date March 11, 2005

Episode Summary
Don learns that counterfeiters are at work producing small-denomination bills, and that they have taken an artist hostage to draw the images for the fake money. If the missing woman isn’t located soon, Don fears that she will be killed when her work is finished on the phony cash. The counterfeiters have already murdered at least five people, two of whom stole money from them. The case is made more difficult for Don when his former lover, now a Secret Service agent, is assigned to it.

Episode 1.08 Identity Crisis
Directed By Martha Mitchell
Written By Wendy West
Air Date April 1, 2005

Episode Summary
A man wanted for stock fraud is found garroted in his apartment, and the crime is eerily similar to a murder committed a year earlier, a case in which Don closed when an ex-con confessed. Now, Don must re-investigate the old case to determine if he put an innocent man in jail. He asks Charlie to go over the evidence to see if he missed anything the first time around.

Episode 1.09 Sniper Zero
Directed By J. Miller Tobin
Written By Ken Sanzel
Air Date April 15, 2005

Episode Summary
The city is in a panic as a sniper goes on a shooting spree and randomly kills several people, including a postal worker. The investigation reveals that more than one shooter is at work. As Charlie works the case, he’s frustrated by a sniper expert Don brings in to help out.

Episode 1.12 Noisy Edge
Directed By J. Miller Tobin
Written By Cheryl Heuton, Nicolas Falacci
Air Date May 6, 2005

Episode Summary
Don and Agent Weston of the NTSB investigate eyewitness accounts of a mysterious unidentified object flying dangerously close to downtown Los Angeles that has raised concern of a terrorist attack. After Charlie is recruited to help with the investigation, it is discovered that the flying object is part of a new technology that could revolutionize air travel. But the investigation takes a turn when they learn that the lead engineer is found murdered.