: While Tubbs is in custody, another student, Katie, is murdered. This creates "doubt" within the team, particularly for Gideon, who begins to question if they have the wrong man.
: The team correctly identified the primary killer but failed to account for a "copycat" or accomplice motivated by a personal connection to the suspect. Episode Details Original Air Date : September 26, 2007. Director : Gloria Muzio. [S3E1] Doubt
: It is later revealed that Tubbs was the killer of the original victims. However, Anna Begley , a suicidal student who had bonded with Tubbs, committed the murder of Katie to provide him with an alibi. Key Themes & Outcomes : While Tubbs is in custody, another student,