Final series of climate emergency drama set in a flooded future world written by Linda Marshall Griffiths.'The Library of Everything' - when what comes after is more dangerous than what came before.

Birdie is having strange visions. While across the water Caleb's uneasy reunion with his dad and Jess's desire to find her mum is making them restless -can they really stay in the Floating City much longer?

BIRDIE ..... Poppy O’BrienGIL ..... Rupert HillJESSIE ..... Sade MaloneCALEB ..... Cel SpellmanALEX…..William Ash

Written by Linda Marshall GriffithsDirected by Nadia MolinariSound Design by Sharon Hughes

Programme consultants: Dr James M Lea; Dr Ian Dawson; Dr. Andrew F. Field.