The screenplay concerns a leading Harley Street specialist who is forced to work with the police to nail a gang of international criminals, after being falsely accused of murder.

The Monthly Film Bulletin wrote: "'The team of Peter Rogers and Gerald Thomas, who made Timelock from a Canadian television play, have now tackled a very different product of the small screen.

Francis Durbridge has made a smooth adaptation of his own television serial Brass Candlestick, but he has not altogether succeeded in disguising its episodic origin; and only a high degree of polish in direction, editing and photography masks the shallow characterisation and the absurdly over-complicated plot.

Francis Durbridge's fiction, which has a forgery ring at its core, is considerably farfetched and frenzied, not to mention cluttered and confused...Actually, the actors in it are some of Britain's best, from Mr. Mills and Mr. Culver to Wilfrid Hyde White and Mervyn Johns.

"[4] A reviewer for Sky Movies wrote that the film has "one of the most tortuous plots ever devised...The suspense mounts steadily under master thriller writer Francis Durbridge's guiding hand, and most English critics were won over by the results.