12 books in series

Killmaster

Killmaster is a 11-book series with 12 primary works first released in 1964 with contributions by Nick Carter, Michael Avallone, and Valerie Moolman.

Run, Spy, Run
The China Doll
Checkmate in Rio
Safari for Spies
Fraulein Spy
Saigon
Berlin
The Casbah Killers
The Death's Head Conspiracy
Cover 4

Race of Death

The Puppet Master
Operation Vendetta