Tom Payne Malcolm Bright Actor Michael Sheen Dr. Martin Whitly Actor Bellamy Young Jessica Whitly Actor Lou Diamond Phillips Gil Arroyo Actor Halston Sage Ainsley Whitly Actor Aurora Perrineau Dani Powell Actor Frank Harts JT Tarmel Actor Keiko Agena Dr. Edrisa Guilfoyle Actor Charlayne Woodard Dr. Gabrielle Le Deux Guest Star Molly Griggs Eve Blanchard Guest Star Kristen Connolly Beth Saverstein Guest Star Mara Davi Simone Guest Star James Cusati-Moyer Nico Guest Star Jennifer Lim Stacy Guest Star Carra Patterson Tally Guest Star Greg Berlanti Executive Producer Sarah Schechter Executive Producer Chris Fedak Executive Producer Sam Sklaver Executive Producer Lee Toland Krieger Executive Producer