Cassia has always trusted the Society to make the right choices for her, so when Xander appears on-screen at her Matching ceremony, Cassia knows he is her ideal mate--until Ky Markham's face appears for an instant before the screen fades to black.

Seeking to avenge the murder of her true love while on a dredge ship searching for gold, fifteen-year-old captain Poe Blythe becomes the architect of new defenses designed to destroy her enemies.

"Rio has always dreamed of leaving the underwater city of Atlantia for life in the Above; however, when her twin sister, Bay, makes an unexpected decision, Rio is left stranded below where she must find a way to unlock the secrets of the siren voice she has long hidden and save Atlantia from destruction"--