After visiting a second mother who had taken part in the same Cystic Fibrosis gene therapy trial as Tess, and whose baby also died at birth, Beatrice is convinced there is a link between the trial and the her sister's death. She is given hope by the fact the the police have finally accepted her belief that Tess was murdered, but she must still try to find further evidence before she can prove her theory to them.

Abridged by Lauris Morgan Griffiths and read by Hattie Morahan.
Producers: Sara Davies and Christine Hall. Show less