Hornet's Nest - S4.E5

A fickle young heiress, Erica Atwood reconsiders her engagement to Chip Lansing, heir to Lansing Chemicals, a company with which Atwood Chemicals is on the verge of merging. To her family's dismay, Erica instead intends to marry Tony Patterson, a wildlife scientist and son of the Atwood's gardener. Tony initially learns of Erica's engagement at a disastrous dinner with Erica and her family. Erica's pragmatic older sister Isabel disapproves of Tony at first, then falls in love with him. Elizabeth seduces Peter's banker to get access to his personal investment file. The information turns out to be useless, and instead of being grateful, her scheming father, Charles, chastises Elizabeth for her wanton ways. Elizabeth later invites a strange man to her apartment; the man brutally rapes her. Because she was foolish enough to let the man in, Charles blames Elizabeth. Through Peter and Christine's mediation, however, Charles and Elizabeth take a small step toward reconciliation.