Kenneth R. Hayles

A pair of reporters try to discover the link between three unsolved, seemingly isolated murders. The only connection between them is they all took place on the same day in three successive years. The police don't trust their instincts - but as 10th July nears again, a solicitor has started receiving threatening letters...

Special investigator Duke Martin is in London to investigate the authenticity of a rare postage stamp called the Barbados Overplate. Someone is willing to commit murder to get his or her hands on the stamp, which puts a crimp in Duke's efforts to romance every beautiful woman he meets.

An insurance investigator in London attempts to thwart smugglers trafficking stolen lambskins infected with anthrax.

US Army Officer Dan Adams, blinded during the war, is framed for a diamond smuggling rap. Upon regaining his sight, Adams goes after the real thieves in an effort to clear his name. In order to trap the wily criminals, Adams pretends that he's still bereft of his vision.

Henry Crossley is an artist whose wife is spending a week's holiday with her aunt. But when her aunt comes to see him, worried because her niece has not arrived, a police investigation into her disappearance begins. It seems that Henry was fully occupied at the time his wife went missing; but is his alibi completely truthful?

A scientist invents a pill to cure smokers of their nicotine addiction. However, when he makes his discovery public, he encounters strong resistance from the tobacco industry.

After being consulted by a friend concerning a murder case, a private eye learns the friend has become the next victim. Passport to Treason was put together by Robert S. Baker and Monty Berman, the same team who’d later collaborate on the UK TV series The Saint. Rod Cameron stars as an American private eye, stationed in London. For the sake of a murdered friend, the detective takes over the dead man’s case, which turns out to have international ramifications. The villains are members of a phony pacifistic society, all of whom harbor plans for taking over the world.

A newspaper reporter finds himself drawn into the aftermath of a racetrack robbery.