A mysterious photograph. An abandoned mansion. A clock that disappeared decades ago.

When Mike Parker and the Detective Club receive an anonymous message pointing them toward Blackwood House, they expect another summer adventure. Instead, they uncover hidden rooms, secret passages, and a decades-old mystery tied to valuable property records buried deep within the old mansion.

Joined by classmates Monica Shah and Audrey Collins, the club must outsmart developers who want the truth to stay hidden. Between bad plans, sarcastic arguments, runaway golf carts, and a chase through the town's summer festival, the world's least-qualified detectives somehow find themselves at the center of Jefferson's biggest mystery.

Packed with humor, friendship, suspense, and unexpected twists, The Mystery of Blackwood House is a fast-paced YA adventure that proves you don't have to be a great detective to stumble into a great mystery.