Forty-one years ago, John Corcoran was murdered in West Cork. Corcoran was an IRA member and a secret garda informer. No one has ever been charged with his murder. No inquiry has been held. J.P. O’Sullivan was the special branch detective who recruited Corcoran as an informer, and he believes there has been a huge cover-up of garda involvement in Corcoran’s murder at the highest level. J.P. has written a book about it called 'Veil of Silence', and joins Pat to discuss.