Episode 43 of The Trigan Empire
The Curse of the Sun Worshippers
aka The Sun-Worshippers (The Collection)
De vloek van de zonaanbidders (Dutch title)
The Curse of the Sun-worshippers (Dutch title, translated)
The Curse of the Sun Worshippers was originally published in 9 installments in issues 621 (8 December 1973) to 629 (2 February 1974) of Look and Learn magazine.
It is reprinted in the Don Lawrence Collection Volume 11, The Sun-Worshippers.
Plot summary (Dutch)