While having dinner in a restaurant, a blind woman overhears two men planning a murder. She then informs Harrison about it. Harry who's in the office at the time, offers to investigate. Harry eventually finds the two men, and while he's bird-dogging one of them, someone kills their target. When Harry informs the police, the other one has a solid alibi. So, they are wondering who could have done the killing. When Harry and Harrison and his family reenact the thing in the restaurant, and Harry surmises, it was the waiter. Harry tries to get the waiter but the blind woman inadvertently tells the waiter what she heard, and decides to take her out but Harry arrives in time to save her. (thetvdb.com)