“Slasher Party” (* out of four) was an unbearable horror show about a group of social media friends and bad actors (Sole Bovelli, Isabella Brenza, Johannes Bartl, and others) who gather for a party in the Hollywood hills but soon find that the party is crashed by a crazy masked killer. Even at only 80 minutes, this is pretty brutal and fails to even deliver any scares or hardly any gory kills. Annoying characters mesh all-too-well with equally annoying performances. Danny Trejo has a token cameo at the end but horror fans would still best “party” elsewhere