Alarmed (2015)

Trapped aboard the family yacht, Samantha lives out her personal Hell, night after night, answering to the cruel and painful demands of the ship's alarm system. Taking a journey into the depths of depravity, she wakes each morning to the disfiguring scars left by the previous night's horror and searches for the answer to a missing memory: 'Could I have killed my family... Or did Hell get it wrong?'