Mia is away at a conference; the kids are at camp; Joe is 'batching' it; his free time is interrupted when a woman asks Joe to find her sister's killer just released on probation; but is this a trap set up to take Joe down? McAdoo complicates Joe's asking that he do due diligence on his niece's fiancé; Morse's legal assistant is being stalked. So much for a peaceful weekend in paradise ...