★ 6.3 Film
The Exorcist III
1990
Both explore investigation and pact with the devil; both horror and mystery
★ 6.1 Film
April Fool's Day
1986
Both explore murder; both horror and mystery
★ 7.2 Film
In the Mouth of Madness
1995
Both explore church; both horror and mystery
★ 6.4 Film
Dead & Buried
1981
Both explore voodoo and murder; both horror and mystery
★ 7.0 Film
The Inugami Family
1976
Both explore detective; both horror and mystery
★ 6.0 Film
Happy Birthday to Me
1981
Both explore murder; both horror and mystery