http://www.guardian.co.uk/world/2012/oct/20/thomas-quick-bergwall-sweden-mur
der
Many people assume, or presume, that no one would ever confess to a serious
crime, let alone a string of them. That's not so. History is full of
people who have been convicted of crimes they did not commit even though
they confessed to committing them. A false confession not only takes up a
prison bed with an innocent person, it halts the investigation that may have
resulted in the actual offender being identified. Juries should always be
suspicious when asked to convict someone on a "confession" alone.