REVENGE - "Doubt" - Daniel's imprisonment sends Victoria to depths that no one thought possible, as the surprise return of a past love (James Purefoy as Dominik Wright) provides a destructive but welcome distraction from her family's struggles. Meanwhile, Jack's search for Amanda grows more desperate as he comes under suspicion for murder, on "Revenge," WEDNESDAY, APRIL 18 (10:00-11:00 p.m., ET), on the ABC Television Network. (ABC/COLLEEN HAYES) EMILY VANCAMP, JOSH BOWMAN