L.A. experienced some scary things this Halloween season, including a mysterious death at the old Millennium Biltmore Hotel, two fires at another vintage hotel, the Mayfair in Westlake, and a lot of people dancing the “Time Warp.”

But nothing beats the fright of seeing dozens of screaming tween girls chasing after Justin Bieber Sunday at the Grove. Check it out:

Advertising disclosure: We may receive compensation for some of the links in our stories. Thank you for supporting LA Weekly and our advertisers.