In quiet Briar’s Hollow, twelve-year-old Tessa Vale and her little brother Ollie discover their grandfather isn’t just a quirky shopkeeper — he’s the keeper of a dangerous map that can open hidden doors between worlds.
When masked enemies steal the map and Granddad vanishes at moonrise, the siblings are pulled into a race through secret bridges, toll-bound gates, and river routes where names can be trapped like keys.
To bring their family back together, Tessa and Ollie must outsmart a powerful order, survive the Ferryman’s bargains, and decide what they’re willing to risk before the final door closes forever.
