Holmes, Watson and Lestrade go to Hatherley Farm, and examine Charles's and James's boots. They then head to Boscombe Pool, following the track from the courtyard. After examining the ground, Holmes finds evidence of the presence of another man, besides Charles and James, whom he believes to be the murderer. Holmes deduces that the killer is left-handed (because Charles was struck neatly on the left side of his head from behind, where a right-handed man would have struck him on the other side), and that the stranger is tall, has a limp, and smokes cigars. Lestrade is not convinced.