Kirby's The Demon has some of the best genuine horror moments in 70s comics, for me. His Frankenstein's monster is mistaken for a war-protesting hippie by a cop who immediately draws and fires on him. Later, some dudes grab a girl and publicly start threaten to hurt her if the monster doesn't come out. They're pretty lurid about it. It's a clear power trip. The crowd, of course, is on their side.
Stuff like that cuts to the bone a lot faster and sharper than last page twists in a novelty mystery for me or Dr Thirteen shaking his fist over a corpse because he can or can't prove it wasn't a supernatural murder.