Clayton Jessup, a deranged serial killer who targets happy families, is on the loose and looking to kill again. The team must race against time to stop him before it's too late. Bex learns who she can and can't trust.
Having gone their separate ways since the series "Beverly Hills, 90210" ended 19 years ago, the cast reunites at a 30th Anniversary fan convention in Las Vegas, causing old flames, feuds and feelings to reignite.