After word spreads of Dana's (Felicity Huffman) engagement to Gordon (Ted McGinley), Dan (Josh Charles) insists Casey (Peter Krause) must tell Dana about his knowledge regarding Gordon's one-night stand with Dana's rival, Sally (Brenda Strong). Not only does Casey refuse to do so, but he also insists the whole affair is none of his business -- and that, contrary to Dan's assertion that he has no plan, Casey has the Napoleonic "show up and see what happens" plan in effect. Dan disagrees with the plan and the attitude and at the first available moment, he tells Natalie (Sabrina Lloyd) who in turn immediately tells Dana. Dana calmly refuses to believe the story, but cannot help but ask Gordon while the two are at lunch. Gordon angrily admits to it and also informs Dana about Casey's own sexual experiences with Sally -- which results in Dana cornering Sally and blaming her for this entire mess. Sally points out that her personal life is her own business and is in no way an attack on Dana, which Dana realizes to be true as she breaks down sobbing. Dana goes on to confront Casey about her findings while Dan begins to wonder if he did the right thing revealing the truth.
by Ryan Shriver synopsis