15 books in series

Tweed & Co.

Tweed & Co. is a 15-book series with 15 released primary works first released in 1966 with contributions by Colin Forbes, Zeno, and Thomas MacGrugar.

Double Jeopardy
Terminal
The Janus Man
Deadlock
The Greek Key
Shockwave
Whirlpool
By Stealth
Cross of Fire
The Power
The Cauldron
This United State
Rhinoceros
No Mercy
Blood Storm