Guest Stars Andrew Gillies as Dr. Julian Adler Alisen Down as Olivia Kirschner Kirk Acevedo as José Ramse Julian Richings as Adviser to the Witness Co Starring Murray Furrow as Dr. Lasky Brooke Williams as Hannah Jones Peter DaCunha as Samuel Ramse James Callis as Athan / The Witness Romina D'Ugo as Max Isys Alexis as Daughter Isys Michael Rhoades as Arlen Wills