Three wives murdered.
Three husbands disappeared.
No apparent connection between the couples all of whom were supposedly happily married.
No apparent motive.
So why had the killer targeted them?
You'd better ask yourself because ..... IT COULD BE YOU NEXT.
Barton is forced to mix the personal with the professional in this highly charged investigation that stretches the patience of his team to the limit. But will they work it out before the killer starts to believe that they've got away with it?