Episode 17 of The Trigan Empire
The Terror of Mount Spyx
aka Het purperen licht (Dutch title)
The Purple Light (Dutch title, translated)
The Terror of Mount Spyx was originally published in 8 installments in issues 383 (17 May 1969) to 390 (5 July 1969) of Look and Learn magazine.
It was reprinted in 8 installments in issues 924 (6 October 1979) to 931 (24 November 1979) of Look and Learn magazine.
It is reprinted in Rebellion’s The Rise and Fall of the Trigan Empire, Volume 2.
Installments
383 384 385 386 387 388 389 390
Plot summary (Dutch)