The Deductions Of Col. Gore (Aka The Barrington Mystery)

Of poisoned African knives and pretty Pickles
Just returned from service in South Africa, Colonel Gore goes for what seems a perfectly conventional dinner party – but before the evening is done the stage is set for blackmail, illegal drugs, and murder.
Drawn into the mystery by Barbara Melhuish (aka ‘Pickles’), the Colonel works through a series of baffling clues to the solution – a solution which comes as a complete surprise!
The Deductions of Colonel Gore is a 1924 detective novel by the Irish-born writer Lynn Brock. It was the first in his series of seven novels featuring the character of Colonel Wyckham Gore who became a popular choice with crime fiction buffs during the golden age of detective fiction.
“…exciting and unexpected” – Times Literary Supplement
“…a clever detective story”— The Sheffield Telegraph