JJ Bailey Creator, Executive Producer Melissa Roxburgh Rebecca "Bex" Henderson Actor Nick Wechsler Oliver Odell Actor Patrick Sabongui Ryan Hassani Actor Josh McKenzie Shane Florence Actor Sara Garcia Jennifer Morales Actor David Ramsey Arlo Brandt Guest Star Kevin O'Grady Big Gus Morgan Guest Star Eliza Norbury Big Gus's Wife Guest Star Marissa Leong Doctor Guest Star Matt Frewer Dr. Henry Dulles Guest Star Theresa Wong Dr. Kenny Guest Star Conor Meadows Felix Morgan Guest Star Shane Savage Leif Guest Star Susinn McFarlen Lucinda Guest Star Sydney Bell Nurse Guest Star Siobhan Williams Sarah Dulles Guest Star Chris Carson Stu Guest Star Jilena Cori Tracy Miller Guest Star Victoria Nwaeze Abductee #1 Guest Star Arif Ali Abductee #2 Guest Star Jai Braithwaite Abductee #3 Guest Star Terry Mullett Abductee #4 Guest Star Patricia Pemberton Abductee #5 Guest Star Dominique Robinson Abductee #6 Guest Star Jake Coburn Executive Producer Thor Freudenthal Executive Producer Keto Shimizu Executive Producer James Bamford Director Michael Jones-Morales Writer Vinny Ferris Writer