Guest Stars Nicholas Campbell as Grandpa Gordon Cooper Jeananne Goossen as Sabina Alli Chung as Detective Taylor Kim Andy McQueen as Det. Malik Abed Nigel Bennett as Chief Coroner Michael Healey as Dr. Ian Peterson Rick Roberts as Gerald Henry Jones Grace Lynn Kung as Greer Genelle Williams as Camilla Brent Christopher Jacot as Glen King Co Starring Kiley May as River Baitz Leon Aureus as Mario Barrington Bignall as Homeless Man Jamie Thomas King as Agent Madden Juan Carlos Velis as Spencer Brinks