"Deep within the walls of America's oldest inn, a secret document hidden away during the Cold War is about to be unearthed.
Mitch and Polly McKenna don't know it yet, but they will soon be embroiled in a decades old drama of espionage and betrayal.
After purchasing a historic grandfather clock for their fifth wedding anniversary, Polly becomes obsessed with startling discoveries about their new purchase: a hidden compartment with a peculiar key inside, and an inscription that reads strangely like a murder confession, pointing to a secret crime and a named victim."