Episode 72 of The Trigan Empire
The Rival
aka Eruption!
De keizer-rivaal (Dutch title)
The Emperor Rival (Dutch title, translated)
The Rival was originally published in 8 installments in issues 844 (18 March 1978) to 851 (6 May 1978) of Look and Learn magazine.
Installments
844 845 846 847 848 849 850 851
Links
Plot summary (Dutch)