Enola Holmes 3: The Case of the Bizarre Bouquets (Nancy Springer, 2009)

Enola Holmes—younger sister to Sherlock Holmes—is back on another case! Everyone knows Dr. Watson is Sherlock Holmes's right-hand man, so when he goes missing, it's a shock. Even Sherlock hasn't the slightest clue as to where he could be. Enola is intrigued but wary; she's still hiding from her older brothers, and getting involved could prove to be disastrous. But Enola can't help but investigate, especially when she learns that a bizarre bouquet—with flowers all symbolizing death—has been delivered to the Watson residence. Enola knows she must act quickly, but can she find Dr. Watson in time? Don't miss Enola Holmes: The Case of the Missing Marquess! Now a Netflix original movie starring Millie Bobby Brown, Henry Cavill, and Helena Bonham Carter!