Monomania by Elton Skelter

They are the final ones, the last person standing. The offer is cash, and all they have to do is go on film to talk about how it happened. How they made it.
In a refurbished Frat House where a tragedy once occurred, eight survivors spill their guts about the slayings they lived through. But for Elliot Hardy, it's his chance to confront his past. Plagued with traumatic amnesia and unable to remember anything about the night of the Phi Kappa Delta Massacre, Elliot is looking to draw the memory of that night back and finally make peace with it.
But there is something dark inside the house, moving through the shadows unseen except the watchful gaze of the cameras.
The final folk survived once, but can they cheat death a second time, or will it finally claim its prize?
From the author of Life Support and Next of Kin comes a slasher throwback to the golden days of the horror classics, where it's not just about what you've done but who's watching you do it.
Uncovering the buried secrets will make the difference between life and death.