Bulldog Drummond is injured when his sabotaged car crashes and Jack Pennington agrees to masquerade as the sleuth.
A bank-robbery in London prevents - again - the marriage of Bulldog Drummond with his girlfriend. But this time when the delinquents are caught it will be celebrated at last.
Bulldog Drummond goes up against foreign agents trying to steal plans for a top-secret aircraft.
Hammond is after the Craig ranch and has framed Charlie Craig for murder. Mother Craig brings in the Range Busters. They capture one of Hammond's men and Alibi plans to trick him into a confession as to who the real murderer is. Meanwhile, Denny has overheard Hammond's plans for his next move and...
