Sanitarium # 4 (Guardian Knight Comics 2015)

A lowly apartment manager discovers an otherworldly black mold growing in one of his tenants' rooms.
But when the residents start acting strange, he becomes convinced that something sinister has replaced them.
What is more terrifying?
Doubting those around you, or doubting your own mind?

Sanitarium # 4 is written by Scott Marcano and others with art drawn by Juan Romero and a cover by Austin Rogers and Wes Hartman.

Sanitarium # 4 is a 40 page comic book in full color.