It is immediately clear that the brutal deaths of Esther and Jessica in a fire at their home was no accident.
Frank McCann, the man with the reputation to uphold, quickly becomes the chief suspect.
His behaviour in the aftermath veers from manic to creepy as he tries to keep on top of the garda investigation.
He jets off to the US and UK on holidays, leaving his wife’s family to pick up the funeral tab.
Hear what the grieving husband says to Gardaí, and the desperate lengths he goes to to throw cops off the scent.
As the O’Brien family faces even more personal heartache, Gardaí swoop in on the suspect.
But will he tell them what really happened?
With contributions from Bernard McCann, Marian Leonard, and gardai Martin Walker and Michael Campbell.