Nathan Fillion John Nolan Actor, Executive Producer Alyssa Diaz Angela Lopez Actor Richard T. Jones Sergeant Wade Grey Actor Titus Makin Jr. Jackson West Actor Mercedes Mason Captain Zoe Andersen Actor Melissa O'Neil Lucy Chen Actor Afton Williamson Talia Bishop Actor Eric Winter Tim Bradford Actor Currie Graham Ben McRee Guest Star Demetrius Grosse Detective Kevin Wolfe Guest Star will.i.am Himself Guest Star Alexi Hawley Executive Producer Mark Gordon Executive Producer Michelle Chapman Executive Producer Jon Steinberg Executive Producer Elizabeth Beall Writer Fredrick Kotto Writer John Fortenberry Director