Discover Sherlock Holmes and Dr Watson through the eyes of those who knew them best.

From familiar faces like Mrs Hudson to minor characters like Lomax the sub-librarian, Observations by Gaslight - told through diaries, telegrams, and even grocery lists - paints a masterful portrait of Holmes and Watson as you have never seen them before.

See Irene Adler team up with her former adversary in an eerie and near-deadly enquiry.

Learn of the case that cemented the friendship between Holmes and Inspector Lestrade of Scotland Yard. And witness Stanley Hopkins' first meeting with the remote logician he idolizes.