I think it is important to identify the individuals who pursued this case. Often we hear about "the prosecution" and "the police" and "the doctor", but what we're really talking about is a group of people who got together to falsely accuse and prosecute someone.
When people tell lies about others, we should use the words "conspiracy" and "plot" to describe their activities. I would like to know the names of the people behind this malicious prosecution, because when such miscarriages of justice are overturned the perpetrators' identities are usually lost in what's called 'the system'.
But someone in Social Services decided to withold details of Christian's medical problems from the couple hoping to adopt him. Someone among the medics decided to falsely accuse Ian and Angela of killing him. Someone in the police decided to arrest them and charge them. Someone in the CPS decided to pursue the case despite all the evidence of a pre-existing medical condition in Christian. Someone decided to lies about Ian's and Angela's characters in court, and to spin a scenario so far from the truth that it is criminal in its deceit.
All these 'someones' are not robots - they're people who wield power and decided to abuse it for their own illegitimate reason... whether to promote their own theories or interests, or to cover for their own mistakes, or to enhance their own careers prosects, or maybe just plain malice.
No doubt if they're found out they will all start to blame each other; but that is, of course, precisely what conspirators do when their crimes are exposed. We should call a spade a spade and not allow 'the system' to pretend it has made mere mistake. Lies are deliberate. It's called perverting the course of justice, and it's a criminal offence.
So, names, anyone, for future reference?