In murder cases, two-thirds of the project's DNA-cleared cases involved a false confession.

WSJ: Officials question 2004 Buffalo murder conviction

Of those, 25 percent involved a false confession.

WSJ: Officials question 2004 Buffalo murder conviction

For Ichikawa, it didn't matter if it was true or false as long as he had the confession.

BBC: Japan crime: Why do innocent people confess?

Because when he sees the request of someone who confessed to a crime now claiming innocence, Romney can think back to this issue and realize that the confession might well have been a false memory.

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