Dad's new crystal wedding cake platter is cracked, and Arthur is accused of breaking it after being caught on D.W.'s videotape, along with the off-screen noise of shattering glass. With the help of friends, Arthur and Buster launch a full Law and Order style investigation to find out what really happened. They become stumped trying to find out the source of an unknown sound that was also caught on tape. (thetvdb.com)