Edition: First US printing.
New York: Simon & Schuster, (1969) dj. Hardcover first edition - The author's first crime novel, and the first in the series featuring Mikael Josef Petros. Petros was awaiting death by hanging in a Central European death cell - and then he was offered a way out. He could buy his freedom by assassinating the President of the neighbouring state. To ensure his good faith. he was injected with a fatal drug that would kill him inside four months, unless he could prove that he had completed his mission and returned for the antidote. An Inner Sanctum mystery. 219 pp. ISBN: 0-671207741.
Condition: Fine in fine dust jacket.