Marion Crandall keeps seeing the ghost of her late husband playing the piano.; Lita Chang wants revenge for her father.; Arriving in England, Shorty meets Peter's family.; Duan comes across trouble with the Bar-L ranch.; Rusty and Red look for water.; Southpaw is on a train with T.N.T. strapped to the bottom.; A plane crew hunts for a Japanese mine layer.; German submarines attack a convoy.; Singer Nini Janine at the Hodge Podge is suspected of passing on messages to the Nazis.; The Professor explains how his rocket anti-aircraft weapons work.