Naomi plans a costume party with her nemesis Holly. Navid's plan for his uncle hits a snag. Silver learns the truth about Marissa. Adrianna tries to help Dixon stay sober by handcuffing herself to him and Annie considers giving Patrick (Chris L. McKenna) another shot. 90210 season 4 episode 7 was directed David Warren and written by Brian Dawson. 7 link(s) were found on 90210 S4 Ep. 7.