From the BBC Press release:
"Baker Street Irregulars is an original Sherlock Holmes mystery, which pits Holmes and the Irregulars against one of Holmes' greatest enemies.Due to air in 2007. In the meantime there is a 'biography' of Sherlock Holmes, by Nick Rennison, which was reviewed in yesterday's New York Times.
The rag-tag group of street kids known as the Irregulars first appeared in the Sherlock Holmes novel, A Study in Scarlet, in 1887.
This time they find themselves having to solve the mysterious disappearance of two of their own gang, while Holmes himself is accused of murder and put under house arrest.
Only by the combination of all their skills can they hope to free Holmes and the kidnap victims, solve the murders and prevent an audacious heist."