Lively performances from Nicholas Rowe as Holmes and Alan Cox as Watson go a long way towards making up for the silliness of the plot, which kicks off like an old episode of 'The Avengers'.

Its adventurous spirit is certainly more in keeping with a schoolboy romp than the adult Holmes' more cerebral investigations.

The only jarring notes in the narrative are some hallucination scenes, which don't add anything to the story.

Stay tuned to the end of the credits - there's an extra scene!