I hate when all the tension comes from characters being stupid
There's no excuse for the girls not getting away. First, kill him when you have the chance - HUGE opportunity blown.
Then, lose him when you have the vehicle. How hard could it have been in the dark to turn off the lights and 'vanish'?
Third, go anyplace but BACK to his place. There's no *beep* way he'd find you if you don't follow the road.
Finally, when Liz gets to his place she hangs around watching home movies when she TOLD Kristy to leave if she wasn't back in five minutes. What is she dallying for?
All those videos tell us is that he's done this before - which we already know - and that he disabled their car - which we could just assume. It doesn't explain their watches stopping though. I guess the allusions to lightning striking, meteors, UFOs and the eclipse are meant to suggest Mick is like a force of nature and who knows where/when/why he strikes. But it doesn't explain the watches.
And how does she not see him in the car? Stupid.