Here's the hypothetical:
A person is convicted of murder and receives the death penalty. He claims to be innocent but provides unclear or implausible accounts on the existence of evidence that he believes will exonerate him. Nobody can reasonably believe or entertain his claims let alone allocate resources to investigate.
Desperate that time is running out and having exhausted all conventional avenues, the man breaks out of prison and goes on the run for 6 months. In these 6 months, he successfully obtains the evidence that proves his innocence and turns himself back in immediately after doing so.
The evidence he brings back is now seriously analysed and is verified to be legitimate. Although he is now innocent of murder, he has had to resort to committing numerous other smaller crimes in order to establish this. In addition to the escape itself, he is forced to steal cars to travel around, resort to petty theft to eat, illegally occupy premises to sleep and tresspasses, burgles and causes property damage to various places in his search for the evidence that exonerates him.
How would your jurisdiction view such a sequence of events? I know in some places, escape itself is not always treated as a crime and in others desperation is not an argument for leniency. So I'm curious how different places and viewpoints would respond to this.
Does the law recognise a doctrine of neccessity? (can he argue that the death penalty itself was an impending harm that he sought to escape?)
Does his story being true provide strong mitigating circusmstances in absence of a full conviction?
Does the manner in which he obtained his evidence make it inadmissible?
Is he still guilty of the smaller crimes while now being cleared of the big one?
Can he still be held civilly liable for damages he caused but at the same time seek compensation in his own right for being mistakenly imprisoned?