The Monthly Film Bulletin wrote: "A good thriller in a light vein."
Kine Weekly wrote: "Comedy crime thriller, brilliantly adapted from Edgar Wallace's all-time best-seller. The tale is not taken too seriously, but at the same time no flagrant liberties are permitted with the original script. Inconsequential romance, represented by rivalry between a police inspector and the attractive head of a gang of crooks, is cunningly encouraged, and this, in turn, merrily paves the way to breath-taking suspense. The grand finale is great stuff. The cast, too, is highly presentable from the stars downwards, and the technical presentation is excellent. Outstanding general booking, one that will meet all box-office needs."
The Daily Film Renter wrote: "Fast moving Edgar Wallace thriller, with Jack Hulbert as amusing Yard 'tec against brilliant woman crook. Dramatic moments mortared with sparkling comedy, and hero's final pairing off with feminine adversary caters for romantic interest. Punch finale shows villains stealing railway train packed with bullion, and sleuth's victory after thrilling loco-v-car race. Hulbert-Tobin team first-rate. Excellent popular entertainment sure to click."
Britmovie called it a "light-hearted comedy-thriller," adding, "like so many Wallace stories logic takes a back seat, but the speeding train sequence generates some lively thrills, and Hulbert and Tobin craft a likeable onscreen chemistry. Tobin is wickedly delightful as Kate, and Hulbert, who co-wrote the screenplay with Jeffrey Dell, gives an agreeable performance in spite of the artificiality of the role." ==References==