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 finds the Angel and learns the location of the Library and Gil and Laurie are finally reunited. But in the Floating City, Cal is in mortal danger.

BIRDIE.....Poppy O'BrienTHE ANGEL.....Remmie MilnerLAURIE.....Jenny PlattJESSIE.....Sade MaloneLEO.....Hamish RushGIL.....Rupert Hill

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.