Colonel March of Scotland Yard

Set in 19th-century New York, this mystery begins when a Frenchwoman shows up at the home of one of Napoleon's former marshals. The alcoholic man is badly crippled and slowly dying, but this doesn't stop the forthright lady from pushing him to change his will to include his estranged grandson so that he can help out the struggling French Republic. Unfortunately, the dying man's conniving housekeeper and butler, already planning murder to get the money themselves, overhear her and begin plotting her demise.

In a French coastal town, Det. Dermot Kinross is inspecting the murder of antiques dealer Maurice Lawes, and the evidence points to Lawes's son, Toby -- and especially to Toby's bride-to-be, Eve Atwood. Eve's ex-husband, Ned, had his eyes set on something Lawes possessed.

A honeymoon aboard an ocean liner is cut short when the bride finds herself suddenly alone, and unable to convince anyone of her husband’s existence.

A woman conspires to steal her stepdaughter's inheritance following the mysterious death of her millionaire husband.

In 1947, a passenger on an ocean liner says her husband went missing right after they boarded together, but all evidence shows she's traveling alone.

A group of people visit a weird old man who is a student of the black arts. The man lives in an ancient, cursed castle. Soon people in the group start being killed off.

Italian TV adaptation of John Dickson Carr's mystery novel Fire, Burn! (1957).