Hidden is a paranormal adventure that spans the centuries from modern London to 19th century Paris and ancient Cappadocia.
Sixteen-year-old Madison Greene is in foster care until one day she inherits a fortune, a house, and a cellar full of danger.
Eighteen-year-old Alexandre lives in 19th century Paris. On an archaeological expedition he discovers a lost underground city where his life changes forever.
For each of them, life is finally starting. Little do they know it is closer to ending. Something lies buried which should have been forgotten. A Pandora's Box that was meant to stay shut. But Madison and Alexandre have never been any good at following the rules. They are about to find everything they've ever desired and everything that could destroy them.
Falling in love has never been so dangerous.