Stunned by their team leader's injury, the team, including FBI Special Agent Liz Warner ( Aya Sumika ), proceed with the investigation, with David, who had recently been promoted to primary relief supervisor, taking over for Don.
12.
First introduced in the pilot episode, he has become the usual partner of FBI Special Agent Colby Granger ( Dylan Bruno ) and has also become the primary relief supervisor for the Supervisor of the FBI Violent Crimes squad, Don Eppes ( Rob Morrow ).
