When Isaac Turner’s grandfather Ferdinand is arrested for burglary in the sweltering heat of an Italian summer, Isaac and his best friend Hattie are determined to clear his name.

But who is the mysterious figure pursuing them through the streets of Florence? And why does Ferdinand have the blueprints of a rich man’s villa hidden in his briefcase?

Their only chance to find the truth is by plotting a daring heist during the approaching solar eclipse - but can they assemble a team they can trust? Or will they be deceived under the cover of darkness?