Departure (2019)

S4E22 The Wrong Goodbye

The episode picks up from the initial happenings at the Constance Alumni gathering. Georgina Sparks arrives, intent on stirring up chaos. Meanwhile, Serena and Vanessa find themselves teaming up, albeit reluctantly, to track down Dan and Charlie, who is struggling to cope with Dan's rejection. As tensions rise, Blair faces a critical decision about the men in her life, especially when Russell poses a threat to her safety.