“Babysitter Must Die” (*1/2 out of four) was a must-avoid clunker about a group of armed cultists (Nic Fitzgerald, Melinda Yeaman, and others) who invade a household looking for something they believe to be inside; fortunately for the house, a tough-as-nails babysitter (Riley Scott) is inside and is determined to fight them back to the death. Umpteenth rip-off of “Desperate Hours” and also (for a more recent cross-reference) “Trespass” and also “The Purge”. Formulaic and unpleasant and not even the fight and revenge scenes are particularly well-staged.