The Beekeeper's Apprentice by Laurie R. King

or, On the Segregation of the Queen

Set in the early 20th century, this captivating novel follows the journey of a young, intelligent woman named Mary Russell, who unexpectedly crosses paths with the legendary detective Sherlock Holmes. As she becomes his apprentice, Mary finds herself immersed in a world of mystery and intrigue, honing her skills in deduction and observation under Holmes' tutelage. Together, they unravel complex cases, forming a formidable partnership that challenges societal norms and explores themes of mentorship, feminism, and intellectual growth. Their adventures lead them through a series of thrilling escapades, testing their wits and deepening their bond.