The team searches for the killer of Luke Cronin, a champion debater from humble means who was wrongly believed to have committed suicide in 1999 after losing his first debate three months into his scholarship-funded schooling at a competitive top private high school.
- Kathryn Morris as Lilly Rush
- Danny Pino as Scotty Valens
- John Finn as John Stillman
- Jeremy Ratchford as Nick Vera
- Thom Barry as Will Jeffries
- Tracie Thoms as Kat Miller
- Vail Bloom as Alyssa Lane (2009)
- Terri Hoyos as Rosa Valens
- Brad Hunt as Stan Cronin
- Nick Niven as Luke Cronin
- Michael J. Pagan as Ronnie Jacks (1999)
- Dash Pomerantz as Oliver Calhoun (1999)
- Cherilyn Rae Wilson as Alyssa Lane (1999)
- Miles Heizer as Keith Oats (2009)
- Matt Biedel as Oliver Calhoun (2009)
- Fatso Fasano as Emil Parker (2009)
- Nelson Lee as Dr. Andiman (2009)
- Darcas Macopson as Ronnie Jacks (2009)
- William Stone Mahoney as Dr. McKenzie (2009)
- Michael C. Adrian as Debator One (1999)
- Raquel Abrahamian as Debator Two (1999)
- Audrey Reba Povar as Debator Three (1999)
- Ian David Nelson as Debator Four (1999)
- Matthew Bartilson as Debator Five (1999)
- Steven Krueger as Debator Six (1999)
- Natalie Testa as Debator Seven (1999)
- John Watkins Clagett as Security Guard (1999)
- Smash Mouth "All Star"
- Bush "Letting the Cables Sleep"
- Foo Fighters "Learn to Fly"
- Fatboy Slim "Praise You"
- Radiohead "Karma Police"