Guest Stars Nina Kiri as Alma / Ofrobert Bahia Watson as Brianna / Oferic Ever Carradine as Naomi Putnam Stephen Kunken as Commander Warren Putnam Sydney Sweeney as Eden Spencer Kristian Bruun as Doctor Rohan Mead as Isaac Co Starring Jordana Blake as Hannah Angela Vint as Leah Paula Boudreau as Grace Scott Chris Gillett as Commander Grinnell Adrian Walters as Commander Horace Ordena Stephens-Thompson as Martha Frances Andrew Zachar as Lakehouse Guardian Sally Cahill as Roy's Wife Andy Auld as Lakehouse Driver Lawrence Cotton as Commander Roy