This thriller book cover features a man wearing a robe. His face is shadowed. There are markings on his face. He’s standing in the middle of a cathedral / church.
This thriller / horror book cover features a mound of skulls at the bottom of the cover and faint spooky trees at the top part of the cover. The cover is tinted green and blue.
This mystery / suspense / thriller book cover features the silhouette of the top of trees in a forest / woods. The perspective is from someone looking up at the tall tree tops.
This thriller / horror book cover features a figure of a person wearing a hooded robe or jacket praying or worshipping at a grave at night. There’s a big full moon in the sky. There are spooky leafless trees around the graves.