Autumn has come, and Sapphire finally feels that some normality has returned to her life; and that's when the last person she expects turns up at her door. Moreover, it seems that someone else has discovered the existence of the Mer; and they're not exactly planning on keeping quiet about it. Sapphire can feel a dark presence growing, and it only wants one thing; revenge...

It's more than a year on from the events of the Crossing of Ingo, and there have been some big changes in Sapphire's life. But with a new sibling on the way, Conor's growing distance from the world of the Mer, Ervy's old allies on the move and Sapphy's confusing new feelings for Faro, still more changes are yet to come. It looks like Sapphire's two worlds may be set to collide…