New series. Jenna Coleman stars in the first of a four-part dramatisation of Helen Fitzgerald's novel. Joanna travels with her partner Alistair and their baby son to Australia, where Alistair hopes to campaign for custody of his teenage daughter from a previous marriage. Their journey ends in tragedy when the child goes missing, with devastating psychological repercussions for the distraught mother. With Ewen Leslie, Asher Keddie and Stella Gonet.