If you like scary horror movies, then you're in luck. August is serving up some great selections for horror lovers. Netflix and HBO Max have both added horror movies that were in theaters earlier this year, both of which may play even better at home. Not to be outdone, Hulu has lined up one of the best horror remakes we've ever seen. These films are Watch With Us' picks for the three must-watch horror movies that you need to stream in August. And you may want to keep the lights on for these flicks.