January 29, 1881: Afghanistan ruined her body, but London has broken her heart. \tDr. Siân Watson longs to shed the male disguise she used to join the British Army, but when you look like a bloke, it’s easier to amputate a man’s leg on a battlefield than buy a dress in London. Undaunted, she heads to the Criterion Hotel to find help. But when a chance encounter with an old friend leads to meeting the mesmerizing Sherlyn Holmes, Dr. Watson’s plans are upended—faster than you can say “the game is afoot.” Now, instead of going home to Wales, she’s moving into 221B Baker Street with Miss Holmes, whose piercing deductions are as thrilling as they are unsettling. Life with the world’s only consulting detective is powerful medicine, but as they hunt for whoever is murdering cab drivers across London, Watson fears her growing affection for Holmes might injure her more deeply than any bullet. As Holmes’s obsession with the case pushes Watson into risks she swore never to take again, she must choose: whatever respectability a woman doctor can earn—or Sherlyn Holmes. Both is not an option. When their quest for justice lands them in trouble with the law, Watson fears she has survived one war only to fall in a different kind of battle—one that may destroy what’s left of her heart.