Santiago Cabrera Darius Tanz Actor Jennifer Finnigan Grace Barrows Actor Charlie Rowe Liam Cole Actor Jacqueline Byers Jillian Hayes Actor Ian Anthony Dale Harris Edwards Actor Melia Kreiling Alycia Stavros Actor Erica Luttrell Claire Rayburn Guest Star Ashley Thomas Alonzo Carver Actor Dennis Boutsikaris Dr. Malcolm Croft Guest Star Taylor Cole Fiona Guest Star Sasha Roiz Monroe Bennett Guest Star Tovah Feldshuh President Mackenzie Guest Star Joan Gregson Re, Syst Avatar Guest Star Samantha Ferris Director Evelyn Davis Guest Star Luke Arnold Bass Shepherd Guest Star Anjali Jay Dr. Rosetta Stendahl Guest Star Christian Sloan Blond Streak Guest Star Madison Smith Nate Guest Star Sarah Edmondson Nora Guest Star Jonathan Silverman Roland Cavanaugh Guest Star Elizabeth Kruger Executive Producer, Writer Craig Shapiro Executive Producer, Writer Alex Kurtzman Executive Producer Heather Kadin Executive Producer Stuart Gillard Executive Producer, Director Grace Gilroy Executive Producer Peter M. Lenkov Executive Producer Carolyn Townsend Writer Damani Johnson Writer Gavin Johannsen Writer KD Davila Writer Jeffrey Lieber Writer Blake Taylor Writer Joe Gallagher Director Douglas Aarniokoski Director Maja Vrvilo Director Nina Lopez-Corrado Director