6. Green Light

Complete story — includes the ending

A DEA raid goes wrong when no drugs are found. The FBI consults on the case, with the DEA team being led by Abbott's former boss in Rio Bravo, Bill Peterson ( Dylan Baker ). Jane discovers the existence of a mole within Peterson's team, tipping off the cartel on when to hide the drugs. Peterson attempts to blackmail Abbott into giving him credit for the case's completion, using Abbott's shady past in Rio Bravo as leverage. Abbott confides in Jane that he shot and killed a cartel leader in Rio Bravo in retaliation to the man's crimes, and Peterson is the only other person who knows his secret. Shortly afterwards, one of Peterson's team members is found dead. Jane, knowing the mole killed the agent, arranges a meeting with all of the DEA members within the task force whom Abbot requires to give up their guns which are removed outside where Lisbon starts removing the live bullets. Meanshile Jane and uses his deduction skills to narrow down the suspects to three. Elsewhere, Vega, on instruction from Jane, arrests Peterson and brings him to the meeting, giving the three suspects time to leave, retrieving their guns on their way out. Lisbon, Cho and Abbott separately confront each member as the killer, testing their reactions. Cho's suspect is arrested after firing his gun on him, but the live bullets had been replaced with blanks. Peterson, furious with Abbott for authorizing his humiliation, is talked down by Jane, who has found his own leverage against Peterson. After the case, Jane and Lisbon celebrate Jane's birthday, with Jane's present being his mended teacup, which broke in " The Great Red Dragon ". Jane becomes emotional and admits to Lisbon that he's truly surprised and couldn't guess what she bought him.