On an overnight sleeper train a ruthless robber (I. Stanford Jolly) steals diamonds and other valuables from passengers including Joan Marshall (Marjorie Reynolds) who has lost papers vital for her future. Railroad detective Val Lennon (John King) is on the case and Joan demands she be allowed to join him in the hunt for the thief (and the papers).The investigation begins, just how does the thief get away and who is this professor (George Cleveland) who always seems to be around when the robberies take place?
It is a fair enough crime drama though can be a bit slow at times. Despite being a short film it is a bit ponderous and wordy, though does include a short musical number! However the crime itself is interesting, organised by a crooked hotel clerk (Warren Jackson) who tips off the robbers about train passengers with a lot of cash. Val and Joan make a good team.
