"If Samuel Pepys could fill nine years' worth of journals with tales of arguments with his wife, visits to the theatres, fire and plague, then I am fairly confident I should be able to achieve a similar feat - with the exception of the plague, that is." Thus begins Mycroft Holmes's valiant, if irregular, attempt to chronicle his doings. Rediscovered in 1976 and now fully translated from an obscure code, Mycroft's diaries reveal that a brother's lot...