Hanna is kayaking by herself in a remote lake when she notices some suspicious activity at a nearby cabin, believing the woman and her daughter staying there may be in danger. After the authorities find nothing unusual and brush Hanna off, she looks in on the family herself and it sets off a deadly cat-and-mouse game of survival.
Lies Beneath the Surface
After the death of her daughter and getting divorced, Hanna Nielsen wants to start over. She starts a business, where she uncovers an abusive husband and murderous mother-in-law.
