Special Guest Stars Neal McDonough as Damien Darhk Wentworth Miller as Len Snart / Captain Cold John Barrowman as Malcolm Merlyn Guest Stars Jack Turner as J. R. R. Tolkien Co Starring Andrea Ware as Volunteer Brian Knox McGugan as German Commanding Officer Michael Robinson as Commanding Officer Chris Cope as Junior Officer Hans Potter as German Soldier Derek Wallis as Injured Soldier
