Sherlock Holmes Consulting Detective - Baker Street IrregularsSherlock Holmes Consulting Detective: Baker Street Irregulars is a cooperative game where the players try to solve mysterious cases by walking the streets in search of clues. Unravel the string of intrigues, answer a series of questions, and compare your detective skills to those of the master sleuth himself, Sherlock Holmes. In 1880, Sherlock Holmes appointed a group of street children as The Baker Street Irregulars, his unofficial "police force".