When Ted Finch goes missing, Jack and Georgina concentrate their attentions on the local health club he attends so enthusiastically. Or does he?
While under pressure to discover the truth behind the murder of young Joanna, Det Supt Boyd slips up and makes possibly some irreversible mistakes. Joanna's killer begins stalking her sister.
Twelve years after Joanna Gold famously disappeared in broad daylight on Hampstead Heath, the dress she was wearing is found in a lock-up. The team begin the hunt for her killer.