A detective story...

Here's a suggestion for an intrigue...

• The Queen's jewels have been stolen!
• The government calls on England's most reknowned detectives - Detective Smith and Detective Jones
• The detectives start their investigation. They interview the people that were in the palace at the time of the theft (cook, butler, chauffeur, guards, gardener, etc)
• Each one says they didn't see the burglar, but gives a small clue (they saw something odd...) which points to another person.
• In the end, the guilty party turns out to be a very unexpected one...