Book excerpt: No mystery is too challenging for the infamous detective Sherlock Holmes and his partner, Dr. Watson. Holmes is at his best when the job seems impossible—or just plain absurd. From cases involving a strange group for red-headed men to a missing thumb, Holmes uses his powers of observation and deduction to solve even the weirdest mysteries. Scottish author Sir Arthur Conan Doyle published his first twelve original Sherlock Holmes short stories as serials in the UK's Strand Magazine from 1891-1892. This unabridged collection of the stories is taken from the book form, originally published in 1892.