A racy detective-style mystery, The Lighthouse Kids is the latest offering from successful children's author Diana Chase. Ellie and Davey are recent orphans who have been sent to live with their grandfather in Larsen's Point by the sea. They have long heard about Lighthouse Cottage from their mother, but they had no idea what mysteries it would, in fact, hold for them. In the trunks at the attic of Lighthouse Cottage they stumble upon a tangled web of sea-hunters, caves and the secret of "OSL 1756," which turns out to be more than extraordinary.