They've survived THE CALL - but now the horrors of the Greylands are coming through into the real world. It's an INVASION! Are you ready?

Nessa and Anto have survived the rites of passage depicted in series prequel "The Call", but are punished on their return by exile to the Greylands for Nessa and militia conscription for Anto. As Anto sets about defending Ireland from invasion, he plots an attempt to rescue Nessa, in this high-octane and powerful YA series conclusion.