It's time to cut out the cancer

A disgusting and vile mental patient comes back to mutilate the nurses and doctors of the institution he occupied 20 years earlier. Nightmarishly, a woman is tied up to the killing spree as a guest through some kind of psychic channels. Thus she's an accomplice to the gruesome deaths as well. James Wan's (Saw, Aquaman, The Conjuring) horror comes without that much value. The twist is ridiculously unreal, even though things get deliciously bloody after that.