Dial 999

Det.-Insp. Maguire tries to break a criminal lawyer's alibi defence.

Det.-Insp. is pulled off an investigation into a pair of racketeering brothers. By the time he returns to the case, Det.-Sgt. Hadley has been murdered.

Det.-Insp. Maguire investigates a series of payroll robberies by crooks who make their getaway in a stolen van then disappear.

Det.-Insp. Maguire is on the trail of a gang of armed robbers who commit three jobs in succession before fleeing the country.

Det.-Insp. Maguire investigates the stabbing of a fellow detective at the docks.

Det.-Insp. Maguire investigates a case of attempted murder. He wants to arm his team, but is frustrated by the long-established rules agains the use of firearms.

Det-Insp. Maguire has to serve a warrant on a U.S. gangster who has sought refuge in England.

Det.-Insp. Maguire is on the trail of a gang of armed robbers who make their escape by canal barge.

Det.-Insp. Maguire trails a newly-released prisoner, hoping that he will lead him to where the robbery proceeds are hidden.

Det.-Insp. Maguire recognises a Canadian criminal, in London to carry out a bank robbery, and tails him to the City.

Det.-Insp. Maguire proposes an unusual strategy in an attempt to find two dangerous armed robbers who are hiding out in a small town.

Maguire goes undercover as a docker to infiltrate a gang stealing goods from warehouses.

Det.-Insp. Maguire sets a trap for a crooked furrier.

A gangster takes over a taxicab firm as part of a plot to assassinate a U.S. scientist.

A gang make a killing at the races when they substitute a ringer for an outsider. Det.-Insp. Maguire tries to follow the money to the crooks.

Detective Inspector Maguire is on the trail of a serial killer, who is strangling lonely young women and dumping their bodies into the River Thames.

Det.-Insp. Maguire arrests a pickpocket, who tells him of a plot to steal some priceless diamonds from the mark's flat.

Det.-Insp. Maguire investigates the theft of valuables from a mail train, but his only clue is an imprint of a heel found beside the railway track.

Det.-Insp. Maguire has to identify a foreigner arrested when attempting to break in to a furrier's shop.

An engineer is found murdered in his cabin on the Rangoon Maid, and there is heroin concealed in the heel of one of his shoes.

Royal Canadian Mounted Policeman Mike Maguire, newly arrived in England to study British crime detection methods, comes across the victim of a stabbing while on his way to Scotland Yard. His first case is to break a protection racket business.