Is There Something Under the Floorboards?

Clyde Orthoarthrous has been murdering people with regularity, removing their hearts. Marla Henderson believes he is a member of some sort of religious sect or cult. She decides to investigate the floorboards and bookshelf in his home. By removing boards, you reveal a trap door under the floors. This is the source of the incense smell. We're going to confront Orthoarthrus. That's what we're going to have a fight.