ghislainem70:

He seized my hand in the darkness and led me swiftly past banks of shrubs which brushed against our faces. Holmes had remarkable powers, carefully cultivated, of seeing in the dark. Still holding my hand in one of his, he opened a door, and I was vaguely conscious that we had entered a large room in which a cigar had been smoked not long before.

— Arthur Conan Doyle, The Adventure of Charles Augustus Milverton

Or, that one time Watson felt it necessary to tell us twice— in the space of three lines— that Holmes held his hand.