On a cross country train, Bulldog Drummond and his assistant Denny cross paths with murder. Linda Bennet needs the precision help that only Drummond has to offer. Who is the mysterious man who is following her? As Denny acts as her body guard, Drummond finds the business end of a gun barrel. The thug is only the hired man who doesn’t trust dames as good looking as Linda. Who is the real killer behind the sinister plot?
Drummond finds an ally in a police detective. Lt Sid Drake needs help from Drummond with his own case. Might the two cases be intertwined? How’s Denny doing in oprotecting the dame? Gunshots in the dark, thumps on the head, and the train whistle screams through the night.
Denny learns the details of the train ride thus far from Drummond. Linda is on the run from high profile gangsters. Drummond explains her ruse, and the story she fed him at first. Drummond has a handle on where his killer is, but what happened to Linda? The clock is ticking for Drummond to save the life of a man, and see that justice comes as he unravels the twisted web of deceit. A trap laid with disappearing ink is the key for Drummond to emerge victorious.