It is a dark and misty night, and bachelors Nicholas and Ian are driving to the ball at Fordings, a beautiful concert hall in the countryside. There waits the charming Dilys Maine, and a party buzzing with rumours of one Rosemary Reeve who disappeared on the eve of this event the previous year. With thoughts of this mysterious case ringing in their ears, Dilys and Nicholas strike a stranger on the drive back home, launching a new investigation and unwittingly reviving the search for what really became of Rosemary Reeve. 

Wealthy Sir Hubert Handesley's original and lively weekend house parties are deservedly famous. To amuse his guests, he has devised a new form of the fashionable Murder Game, in which a guest is secretly selected to commit a 'murder' in the dark, and everyone assembles to solve the crime. But when the lights go up this time, there is a real corpse....

While hot on the heels of serial coupon-racketeer Gordon Ginner, Chief Inspector MacDonald of Scotland Yard receives word of an intriguing incident up in Lancashire – the summer cottage of local farmer Giles Hoggett has been broken into, with an assortment of seemingly random items missing which include a complete reel of salmon line, a large sack, and two iron dogs from his fireplace. What first appears as a simple break-in quickly spirals into a mystery of contested land grabs for fishing between farmers, made all the more enticing to MacDonald when a body is then found in the river.

A late-night murder of a diamond merchant’s veteran employee in London’s Hatton Gardens has Scotland Yard calling on Inspector French to investigate. When French gets there he finds not only the victim but missing diamonds and money from an open safe. There are meager clues as the Inspector follows a trail to mainland Europe and back. There are many false clues and several suspects with much of the searching leading to nothing but dead ends. We can listen as French sorts it all out, finding the missing diamonds and nabbing the murderer.

Chief Inspector Macdonald has been invited to a treasure hunt party at the house of the Graham Coombe, the celebrated publisher of Murder by Mesmerism. The clues of the hunt have been devised by Coombe's thriller-writer friends, disguised on the night under literary pseudonyms. The fun comes to an abrupt end, however, when 'Samuel Pepys' is found murdered in the telephone room in bizarre circumstances.