Guest Stars Gavin McHugh as Christopher Diaz Tracie Thoms as Karen Wilson Devin Kelley as Shannon Diaz Jama Williamson as Det. Anita Mercer Joseph Lyle Taylor as Marty Collins Max Adler as Sam Christian Clemenson as Franklin Jenica Bergere as Nina Terry Woodberry as Dt. Lonnie Wash Javier Grajeda as Chief Alonzo Co Starring Carole Gutierrez as Luann Michael Whaley as Commander Bowman David Douglas as Billy Samantha Cutaran as Female Uni Cop Stefan Ionesco as CSI Tech Kevin D'Arcy as Harrison