There are 7 books in the The Inspector Cockrill Mysteries series. The newest book is The Three-Cornered Halo which came out in 2013.

1
Heads You Lose

Heads You Lose
Inspector Cockrill of Scotland Yard investigates the gruesome murder of Grace Morland, whose body was found behind Squire Stephen Pendrock's mansion
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This Golden Age masterclass of red herrings and tricky twists, first published in 1944, features a tense and claustrophobic investigation with a close-knit cast of suspects.

"You have to reach for the greatest of the Great Names (Agatha Christie, John Dickson Carr, Ellery Queen) to find Christianna Brand's rivals in…

4
Death of Jezebel

Death of Jezebel

First published in Britain in 1949, Brand's exuberant novel is still regarded as one of the great masterpieces of the classic mystery genre for its fiendishly constructed puzzle, memorable setting, dumbfounding acts of misdirection and thrilling denouement. This edition includes an introduction by award-winning author Martin Edwards.

"A very neat…

5
Fog of Doubt

Book cover of Fog of Doubt
The Golden Age author of Green for Danger delivers "a mystery in the classic Christie-Carr-Queen manner . . . An outstanding tour de force" (The New York Times).
Few were disappointed when Raoul Vernet was found with his head bashed in, dead in a pool of his own blood. On…

6
Tour de Force

Tour de Force
The vacationing Inspector Cockrill is on the job again when a fellow tourist is stabbed to death on a small Mediterranean island. The local police, in Cockrill's opinion, are illprepared for interrogating the tourload of suspects, she he takes it upon himself to confront these not-so-innocents abroad. The results, in…