An eccentric professor, a missing family fortune, and a baffling murder case are in store for Capt. Hugh "Bulldog" Drummond (John Howard) and his loyal fiancée Phyllis (Heather Angel), in this tantalizing series entry. Just as Drummond and Phyllis are about to marry inside a magnificent castle, they are forced to undertake a dangerous treasure hunt. With Reginald Denny, H.B. Warner. 54 min. Standard; Soundtrack: English.