Prompt from I'm Nova: Conan Doyle meets Holmes.
Watson looked up as the book was dropped on to the table. "What's this, Holmes?"
"I happened to meet with a friend of yours today," Holmes told him. He retreated to his chair and perched there, watching Watson intently.
"A friend of mine?" Watson's eyebrows rose, and he picked up the book curiously, turning it over in his hands. "Captain of the Pole Star? Holmes, surely you know I already-" He opened the cover, and his voice cut off. Written neatly on the inside front over were the words, 'To John Watson; most pleased to know you are a fan. Enjoy! Arthur Conan Doyle.'
Watson's mouth dropped open, a gentle "Oh!" escaping his lips.
"I did know you already owned a copy, but I thought you mightn't mind having this one as well." Holmes reached out to take the book. "Of course, I-"
"Thank you!" Watson burst out. "Holmes, this is an incredible gift. Thank you, my dear friend." He ran his fingers over the cover. "I will treasure this."