999: Killer on the Line?

Byrne (2x6)

Air date: Aug 13, 2018

A wonderful wife, a stockbroker husband and two beautiful children, the Byrne family from leafy Theydon Bois, Essex appeared to have the perfect life. But the discovery of a secret affair, a long standing deceit and a house fire would end in the tragic loss of life and the hunt for a killer.