It’s oddly comforting that a movie can still dial M when it wants to.
Smart phones have largely been a bit of a buzzkill for horror films, leading filmmakers to find all kinds of reasons — dead batteries, no service — to strand potential prey. But at least since 1949’s Sorry, Wrong Number, phones have also been a reliable conduit for terror capable of reaching into the home, or your pocket. Drop, a silly but suspenseful new thriller, carries on the tradition of When a Stranger Calls and Phone Booth by situating its tension around mysterious, threatening phone messages.