‘First Kill’ stakes out teen vampire love story

“First Kill” isn’t good, but it’s bad in semi-interesting ways — the kind of young-adult genre show that Netflix churned out by the truckload before beginning to pull back. The one-line description — “Romeo and Juliet,” only adapted here as the crucifix-crossed romance between a vampire and a vampire slayer — seems ripe for mockery, and the execution doesn’t do much to blunt it.