Episode 1: David Collins is unexpectedly acquitted on a technicality, having served seven years of a life sentence for the murder of his wife, Tara. On the steps of the courthouse, he vows to bring to account those who lied at his original trial, to see the real killer jailed, and, most important, to regain custody of his two young children, who have been in the care of his waspish sister-in-law