Marianne de Barde

Attractive Julia Swinton is a middle-aged woman. Her life went normally and without big occurrences. But through the unexplained death of a familiar young lady in a houseboat and the sudden appearance of a strange stranger, unrest and threat now break into the seemingly so peaceful everyday life of the Swinton family. As it soon turns out, Mr. Swinton has a secret relationship with the lady on the boathouse...

A young Anglican clergyman gets on the night express to London at Edinburgh station and joins an elderly gentleman in the compartment. Gradually, the journey gets under way, during which it turns out that both are apparently secret agents.

Engineer Tim Frazer is hired by the mysterious Mr. Ross to search for his missing business partner Harry Denston. Denston appears to be involved in a case of espionage.

A Scotland Yard inspector investigates the murder of a young model strangled with a necktie, uncovering a complex jewel heist ring in the process.

A man shrouded in mystery. His name is Harry Brent. Not even his fiancée knows much about him. All she knows is that he runs a small travel agency. In a puzzling turn of events, he becomes involved in the murder of his fiancée's boss. The first thing that becomes clear to Detective Inspector James Wallace is that Harry Brent is obviously a key figure in the case...

Janet Freeman, the daughter of the English nuclear researcher Clive and his wife Lucy, is kidnapped.

Three agents stir up a hornet's nest of greed, betrayal, and intrigue.

The London fashion photographer Eric Martin expects his brother Philip Martin to return from Germany after a longer period of military service. When he arrives, Philip Martin reports an accident in Hamburg. He should bring items from the victim's wife to Dublin. However, Philip Martin behaves strangely, so that Eric Martin doubts the story. In fact, his brother travels to the Royal Falkon Hotel in Maidenhead and rents a room there.