Rachel Delahaye

'Follow the big blue'.

That was the last thing Cam's father said to him. Cam follows Big Blue - everybody does on the island of Cetacea. Their lives take place within his rules, delivered to them by enigmatic whale-talker, Byron Vos. Byron was once a marine scientist but is now organizing an epic clean-up operation to revive the ocean after centuries of human greed and neglect. And yet Cam wonders if there is a more complex truth. A truth that may be connected to his father's disappearance.

Cam's quest to understand Big Blue leads him to new friends and shared adventures - but the truth, when he finds it, is more dangerous than ever he could have imagined.

Estrella is the 'perfect' society: an immaculate, sanitised, hyper-connected environment where everything is channelled through the digital medium. There is no dirt, no pain, no disease and no natural world.

Alara is dropped down to London Under and into a new-old world that bewilders and disorientates her. How will she survive in a society where noise, dirt and even pain are everyday experiences? Will she accomplish her mission? Who can she trust? How will she get back to her family?