Someone died in the reading room. The door was locked from the inside. And the only person found inside was Lark's sister. Lark Penwythe came back to Inkwell-on-Wye for one reason: bury her father and clear out his crumbling bookshop. She came for closure, not a corpse. But on the eve of the town's annual Literary Lantern Festival, the local historian is found poisoned inside the shop's private reading room — a room locked from the inside, no forced entry, no explanation. The detective has...