Plot hole: When Kale and Ashley escape from Turner, Kale tells Ashley to make sure the police come. But, when the cop comes, Ashley does not seem to have told him about what just happened, he gets killed before he can request backup, and then the police arrive right after Kale and his mother walk out the garage after defeating Turner. Why did she not inform the cop and wait all that time to call the police?
Plot hole: When Kale and Ashley are hiding in Kale's dad's office before Turner breaks through the door, the power goes out. Kale's ankle bracelet goes off when he and Ashley cross the line. However, considering that at the beginning of the film Viola Davis explains that the police will come immediately if the machine that traces the bracelet is unplugged, the bracelet should have started when the power went out.