Was killer father having an affair? Detectives probe private life of triple murderer

Posing happily together for the camera a few weeks ago, this is the family whose lives ended in cold-blooded slaughter in their home.

Richard Smith stabbed his wife and two young children on the marital bed before starting a fire that killed him.

Detectives are probing the possibility that he had been having an affair and that this was a key factor behind the appalling multiple murders.     More Read