A serial rapist sends a letter to the squad announcing his return to Philadelphia after five years and his plan to strike again. Lilly's best hope of catching the rapist comes from a victim who is able to provide a composite sketch.
- Kathryn Morris as Lilly Rush
- John Finn as John Stillman
- Jeremy Ratchford as Nick Vera
- Thom Barry as Will Jeffries
- Greg Zola as Bruce Elridge
- Bree Turner as Ellen Curtis
- Joel Bissonnette as Carl Healey
- Jenni Blong as Nicole
- Brooke Bloom as Tania
- Joy Hooper as Anna Berlin
- Sarah Rosenberg as Bridget Young
- Christopher Shea as Larry Detroit
- Brooke Swift as Caitlin Young
- Gwendolyn Whiteside as Gail Chimayo
- This episode is loosely based on the "Center City Rapist" Troy Graves.
- Justin Chambers does not appear in this episode and his name is removed from the opening credits, though he appears in the following episode.
- Third Eye Blind "How's It Going To Be"
- The Cranberries "When You're Gone"
- Closing Song: Wallflowers "Heroes"