Season 1 Episode 10: Chapter Ten: The Lost Weekend
When Fred decides to finalize the divorce with Archie’s mother Mary, Archie hides his true feelings. Archie tries to win Valerie back with a romantic evening, however, Betty hijacks his plans when she decides to throw Jughead a surprise birthday party. Once Cheryl learns of the party, she decides to make it interesting and things quickly get out of control. Meanwhile, Veronica contemplates whether she should participate in the deposition to help get her Dad released.