La nuit des longs couteaux (Part 1 of 2)

From Author Wars - https://authorwars.com/books/la-nuit-des-longs-couteaux-part-1-of-2-1759441.html

Overview:

Title: La nuit des longs couteaux (Part 1 of 2)
Author: Fritz Leiber
Year: 1971
Type: Serials

Editions/Publications:

Unknown. Fiction, #214 (Unknown, Fritz Leiber, OPTA, F4.00, 164 pages, digest, MAGAZINE)