Drew Bolton’s 2019 film, “Killer Unicorn,” provides a welcome entry into queer horror. The story centers on Danny at the fictional and humorous "Brooklyn Annual Enema Party," where he finds himself alongside drag queens and other queers defending him against an attacker wearing a unicorn mask. It manages to be scary when it needs to be, but consistently delivers laughs, making “Killer Unicorn” stand out as one of the…