Crispin Alapag

The BAU interviews candidates to take the opening left by Kate's departure; the team tracks a serial killer who leaves behind evidence that indicates a person intent on revenge.

The team must find the person responsible for a sarin gas attack on a Los Angeles bus before a larger incident occurs.

Jack heads to Cleveland to make things right with Rebecca on the night of her first big gig with the band. Randall, Kate and Kevin make big decisions about their futures.