A small town detective investigates the murder of an attractive couple whose killing appeared beautifully staged in their home, like an art exhibition.

Might be more interesting if he's hunting for a serial murderer whose m.o. is to artfully stage the crime scenes, pose the bodies.

>>>>suffers from mild psychosis due to stopping an antidepressant

Really? Is that medically accurate?

Whatever, the logline would benefit from a hook, a plot twist that makes it stand out from other murder investigation movies. As is, it seems to be a rather standard issue, boilerplate murder mystery.