Alexi Hawley Creator, Executive Producer Nathan Fillion John Nolan Actor, Executive Producer Mekia Cox Nyla Harper Actor Alyssa Diaz Angela Lopez Actor Richard T. Jones Sergeant Wade Grey Actor Titus Makin Jr. Jackson West Actor Melissa O'Neil Lucy Chen Actor Eric Winter Tim Bradford Actor Harold Perrineau Detective Nick Armstrong Guest Star Ali Larter Dr. Grace Sawyer Guest Star Brent Huff Officer Smitty Guest Star Crystal Coney Nurse Lisa Guest Star Jeff Pierre Emmett Lang Guest Star Christopher O'Shea Officer Chris Rios Guest Star Hannah Kasulka Officer Erin Cole Guest Star Greg Serano T.O. Martinez Guest Star Mark Gordon Executive Producer Michelle Chapman Executive Producer Jon Steinberg Executive Producer Bill Norcross Executive Producer Terence Paul Winter Executive Producer Rob Bowman Executive Producer Natalie Callaghan Writer Nicholas Hurwitz Writer David McWhirter Director