Topic: Private investigators

The race /
The mysterious affair at Styles : the first Hercule Poirot novel /
Cat among the pigeons /
Black coffee : a Hercule Poirot novel /
Sad cypress,
Every last drop : a novel /
The narrows : a novel /
Lullaby Town /
The quality of mercy, harvest of courage /
The hollow; a Hercule Poirot mystery.
Evil under the sun,
Mrs. McGinty's dead.
Murder in the mews and other stories.
The big four,
N or M? : the new mystery /
The murder on the links.
The clocks
Five little pigs : a Hercule Poirot mystery /
Hickory dickory dock /
Hallowe'en party