It would be so much easier if the blame could be laid on the shoulders of June, who, a victim of the fire and brimstone upbringing herself had communicated this philosophy to her daughter in the classic folie รก deux, though Jeremy had escaped and Colin tried valiently to extricate the twins from its harm. So much neater if Jeremy were innocent, whether this in practice meant a full pardon, a verdict of not guilty following a retrial or simply that the original conviction was unsafe. Everyone would breathe a huge sigh of relief, I doubt anyone else would be punished and Jeremy could obtain a financial settlement he had fought for all along.
I assume in this scenario it is Sheila who is the guilty party (it's always a good bet to blame the dead as they cannot answer back). Sheila died but was spared a worse fate of transportation to Broadmoor and thence quietly forgotten as people picked up the shards of their shattered lives.
Of course it's Trudi who is responsible for opening up healed wounds as she converses in her new-found circle with the joys of friends and hearth, in the kitchen, at the local public house or in a wooded setting, but never once ventures outside her comfort zone: Trudi & Co. who after the small talk is complete rake over the harrowing details of this case as if they are the experts and hold the monopoly on truth. In reality it is Colin who hears the voices of his sons on the wind, vibrating in his ear, but who awakes to find the void, the delusion, which Jeremy bequeathed him.