Alexi Hawley Creator, Executive Producer, Writer 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 Shawn Ashmore Wesley Evers Guest Star Ali Larter Dr. Grace Sawyer Guest Star Brent Huff Officer Smitty Guest Star Jane Daly Patrice Evers Guest Star Crystal Coney Nurse Lisa Guest Star Michelle Bernard Officer Desantos Guest Star Pete Davidson Pete 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 Liz Friedlander Director