When Mike is arrested, Susan realizes that Martha Huber was murdered on the same night she and Mike first slept together. She's his alibi! Mike later gives Susan a letter that explains his past indiscretions. Susan and Edie snoop around Paul Young's house. They find a tape labeled "Utah, Angela Award Party." Later, a toy chest that Paul bought years ago turns up with a woman's body inside. The dead lady is identified as Deirdre, the ex-girlfriend Mike has been searching for answers about ever since he moved to Wisteria Lane.