Sometimes you learn valuable lessons from schlock horror films. In the case of “Friend Request,” it’s this: don’t friend people on Facebook who you don’t know. The film is a German production in English and similar to 2014’s “Unfriended.” The film combines real internet fears with spooky “Omen” style death scenes. The pacing is fierce and the body count high as the ghost of an unpopular internet girl kills off our unlucky protagonist’s friends one by one, making them look like suicides. The film gives us the opportunity to reflect that maybe we should concentrate on real-world friends as opposed to internet ones. If you’re looking for a scary time and have already seen “It,” you could do worse.