And I say "surprisingly", because it came late in the series, and it stars Ron Randell, whose first shot at the role ("Bulldog Drummond At Bay") was a film so forgettable that I have already forgotten it although I watched it two days ago! This one, however, is probably better than ALL the John Howard films of the late 1930s and may actually be the best entry in a decade! The chief reason for this is a good plot: unlike most Drummond films, where we know who the villains are from the beginning or the middle, this one is a legitimate mystery that keeps you guessing right up to the last minute, and has you constantly revising your guess: first you think that THIS is the real Ellen Curtis (heiress of a large estate), then THAT one, then THIS, then THAT....and so on. Or, to put it in Algy's words, "How can I tell who is telling the truth when they both look so pretty?". The direction is standard, but the cast is solid; these B films often rely on little-known actors who are, nevertheless, underrated and professional. **1/2 out of 4.