An aristocrat's son is the main suspect after a crown on loan from the Queen goes missing. Hound is asked to investigate, not knowing Professor Moriarty has been watching the location.

When Moriarty goes to great lengths to steal a parrot off a train, Hound takes up the case to find out what's so special about this parrot.

Moriarty is after a large diamond, but after hiding it in a doll, he ends up with more than he bargained for.

A bride vanishes moments before she is to walk down the aisle, and the couples' families come to Sherlock Hound for help, but when secrets from the bride's past come to light Hound has to weigh his options.