Trust Metric

Five weeks have passed since the events in "The Janus List".[1] FBI Special Agent Megan Reeves (Diane Farr) and her boyfriend, Dr. Larry Fleinhardt (Peter MacNicol), have been spending time at a Buddhist monastery. FBI Special Agent David Sinclair (Alimi Ballard), Dr. Charlie Eppes (David Krumholtz), and Dr. Amita Ramanujan (Navi Rawat) have continued with their lives. Charlie, an FBI math consultant, has returned to teaching full-time. Worrying their father Alan Eppes (Judd Hirsch), Charlie's brother, FBI Special Agent Don Eppes (Rob Morrow), spends the five weeks reviewing the tape of former FBI Special Agent Colby Granger (Dylan Bruno), who is currently serving time in prison on charges of espionage. Colby receives a visitor (Gary Wilmes) who gives Colby a key and hints that something will happen during Colby's transport to another facility. During transport, a gang begins a shootout with the agents transporting the prisoners, providing Colby and fellow inmate Dwayne Carter (Shawn Hatosy) with cover to escape. Meanwhile, back at Charlie's house, Don and Alan learn that Charlie is considering updating a paper on friendship math that he wrote as a 12-year-old. They and Amita then hear about Colby's escape on a television newscast.

At the scene, Don, David, and Megan find Colby's and Dwayne's handcuffs at a warehouse near the shootout/escape. Megan attempts to convince Don and David to discuss their feelings as the case is personal for them. David refuses, and Don states that he feels responsible for Colby. At the FBI office, Charlie realizes that he cannot determine the route that Colby and Dwayne are taking, so Charlie calls Larry for moral support. Using covering sets, Charlie, Amita, and Larry realize that Colby and Dwayne would flee to the subway system, and Don realizes that the accused spies would use the subway to avoid police. When Don confronts Dwayne and Colby at a subway stop, Dwayne tries to shoot Don. Colby stops Dwayne, and the pair escape onto a subway train.

Some time later, Colby makes two calls. One goes to voicemail, and the other is to Charlie and Don. Colby tells Don that Colby, since his training at the FBI Academy, has been a triple agent working with Michael Kirkland in the FBI's Counterintelligence Division to find a mole within the United States Department of Justice (DOJ). The team confirms Kirkland's existence and FBI work, as well as his visit with Colby, but finds Kirkland dead in a hotel room, leaving no way to confirm the rest of Colby's story. At the house, Don expresses regret about not firing at Colby, and Charlie tells Don that Don's belief in the goodness of people prevented Don from firing. At CalSci, Alan tells David, who has been looking for Charlie, to attempt to understand Colby's motives for his actions before ending David and Colby's friendship.

Meanwhile, Dwayne and Colby escape to a freighter. There, they find Mason Lancer (Val Kilmer), a United States attorney whose birth in Beijing, China, to American parents led him to spy for the Chinese. While revealing that Colby is indeed a triple agent, Lancer, who possesses some medical training, gives Colby two drugs to induce him to talk about the FBI's investigation into Lancer. At the FBI office, Charlie uses a trust metric to determine Colby's credibility. The rest of the team analyze NSA satellite photographs of the Port of Los Angeles to find Colby and Dwayne and find Lancer's SUV at the port. Charlie's trust metric reveals that they could trust Colby. After deciding against obtaining a search warrant due to the amount of time left before the freighter crossed into international waters, the team boards the freighter to rescue Colby. As the team boards, Lancer gives Colby an injection of potassium chloride, and Dwayne shoots Lancer. Dwayne is then killed by one of Lancer's men. Don and David find Colby unconscious and begin administering CPR.

At the hospital, Megan and David visit a recovering Colby. David refuses to enter Colby's room, feeling uncertain about his friend. Charlie, Don, Alan, and Larry celebrate the arrest at a restaurant. Over Don and Alan's objections, Charlie and Larry begin discussing the revision of Charlie's paper on friendship math.

Over 9.38 million people watched "Trust Metric".[15] Critically, the episode was very well received. Lynn Elber of the AP News stated that, due to Scott's involvement in the episode, "Trust Metric" felt more like a film than a normal episode of the show.[5] Jeffrey Robinson, a reviewer for DVD Talk, included "Trust Metric" in his list of highlighted episodes.[16] Donald Liebenson, one of Amazon.com's editors, called "Trust Metric" "explosive" and "a Very Special Episode, complete with blazing action set pieces and even a Big Name Star (Val Kilmer!) right out of a Tony Scott blockbuster …".[17]

On the Numb3rs season four DVDs, the bonus feature "Crunching NUMB3RS: Trust Metric" addresses the production of the episode. The feature has five segments. The first segment, "Pre-Production", addresses Scott's and shows some clips of filming the pool hall and ambush scenes as well as a clip showing the planning of the freighter scene.[3] "Tony's Touch" details casting and the changes made for the episode.[4] Clips of the filming of the scene are interspersed with descriptions of how the scene was planned and shot in "The Ambush".[9] In "The Freighter", the crew and actress Diane Farr describe how the freighter scene was filmed.[10] The final segment, "Post-Production", features the changes made to the title. It also contains a segment of a special viewing at the Academy of Television Arts and Sciences on September 27, 2007. After the viewing, the cast, series co-creator/co-executive producer Cheryl Heuton, co-creator/co-executive producer Nicolas Falacci, and Sanzel participated in a panel.[6]

• Numb3rs: Trust Metric (2007) at Internet Movie Database