When Janet refuses to keep quiet , he commits suicide .
However , Janet realises Rizzoli was behind both , as well as Renmark 's murder : He was using the ring to control high ranking officials and ensure convictions .
When Janet refuses to keep quiet , Rizzoli commits suicide .
However , Janet realises Rizzoli was behind both , as well as Renmark 's murder : He was using the ring to control high ranking officials and ensure convictions .