Guest Stars Michael O'Neill as Retired U.S. Army General Richard Collins Stephanie Erb as Tranquility Villa Staff Member Psychologist Vicky Weber Lex King as Mia Hahn Co Starring Nicola Lambo as Lead ATF Agent Juan Monsalvez as ATF Special Agent Francisco Reyes Gigi Bermingham as Laura Jake Jacobson as Devon Walker Charles Ambrose as Lukas Meyer