It's a shame it ended like that. It had promise, but ultimately tried to be too clever.
The flaws were numerous, and obvious, as others have pointed out. The DNA in particular was a shocking oversight.
And really, the policewomans husband ends up making a living out of ghoulish claims re: sighting of the body?!
The explanation of how/why the brothers identities were switched was far too rushed, and there was not even a hint of any conflict for the mother once her younger son started his miraculous recovery - from being 'paralysed with no suggestion of recovery' to fully up and walking about with no physio or rehab
.
And yy to where we're the younger son's medical notes? The whole village knew that apparently the older son had been discharged to his mother' scare because she had the nursing skills, but surely even so there would have been local medical professionals involved? Where was the mother getting all the drugs from - supposedly for her older son, with his fabricated locked in syndrome, but in reality for the younger one who was paralysed (according to one policeman, but think he meant in a coma) following an aneurysm... surely all prescriptions would have the wrong name on them?