Duval investigates the theft of four uncut matched stones from an Angolan diamond mine.
The Thirteen Innocents
The Money Game
The Sleeping Giant
The Two-Headed Monster
The Long Weekend
You Can't Die Twice
Diamond S.O.S.
Private View
Dead on Arrival
Air Switch
The Angola Brights
The Chinese Mask
Slave Ship
The Man's a Clown
Last Man Lucky
No Flowers for Onno
Mr. George
The Thousand Mile Alibi
Act of Piracy
Game for Three Hands
The Collector
The Heiress
Payment in Advance
Checkmate
Fingers of Guilt
The Girl with Grey Hair
Trial at Cranby's Creek
Ascent to Murder
Slow Boat to Amsterdam
White Blackmail
A Foreign Body
In the Swim
The Three Keys
Eight Days Inclusive
Dressed to Kill
Cargo of Death
Desert Hi-Jack
Pipeline
The Absent Assassin