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A car crash into a building has ties to street racing and possibly a cold case.
All Episodes - S04
EPS01
Peter MacNicol returns as a regular cast member. Colby is being interrogated by a man named Agent Kirkland, who passes him a handcuff key and gives him escape instructions. Don and his team get information about and from Colby and must figure out if that information is reliable then realizes that everything about Colby being a double agent may not be what it seems. Written by Anonymous
EPS09
In this episode, it is discovered that someone has stolen, recreated and sold several copies of an extremely rare comic book. Christopher Lloyd plays the original creator of the comic book, who no longer benefits from his past creations. Having thought that his comics wouldn't be worth much in the future, he either lost or sold his entire collection and regrets it now that he and his wife live on very little. His young friend and fellow comics artist, played by Ben Feldman, publicly humiliates the rich man who owned the original before it was stolen. Written by Wendy Nind
EPS10
Ben, who we learn is a laid-off FBI wiretapping subcontractor, runs through the metal detector in the lobby and shoots the agent who let him go. He then grabs a woman as a hostage and backs into an elevator, where David Sinclair confronts him at gunpoint and trades himself as a hostage if Ben will let the woman go. While Ben and David talk at gunpoint in the elevator, stopped between floors, Charlie Eppes tries a number of times to explain the Chinese Box theory to the agents dealing with the hostage situation. Meanwhile, the agents discover that Ben's seemingly paranoid story that he has been under surveillance turns out to be true. When agents try to quickly move and open the elevator, Ben manages to take David's pistol away and keep the elevator closed. Charlie convinces Don Eppes to let David call the shots to resolve this situation by showing Don the Poison Cookie game, implying that this also relates to the Chinese Box problem. Ben gives David his pistol back and tries to ... Written by KOakaKO
EPS14
A.U.S.A. Robin Brooks is back in town, and her involvement in Don's case brings back memories as they try to keep witnesses alive. Meanwhile, David attempts to bond with a young man who's in the chief suspect's thrall.
EPS17
The murder of a rapper puts Charlie to work analyzing the mathematics of the music business in the same week that Amita's parents come to town, and Megan has asked for a week off without discussing it with Don.
EPS18
When one of Charlie's friends, a scientist at the university, is arrested for terrorist activities, it puts him at philosophical odds with Don. And as he works to prove the man's innocence, his beliefs may jeopardize his career.