The Final Piece - Alan Jones - Bog

A Half Remembered Song
Teacher Tom Ellison takes group of his pupils on a fishing holiday in Southern
Ireland. One of the boys disappears mysteriously and an extensive search, involving divers and helicopter, fails to find the boy. Blame Culture in The National
Press, and criticism at home, leave his reputation in tatters as he was held responsible. He is forced from his job. Two years later he receives a postcard telling him to "Ask Mary McMahon what happened to the boy" On his return to Ireland, he discovers links with a terrorist cell., and In a dramatic police operation Joe Riordon is charge with the boy's death and body is recovered.
The Final Piece (the sequel)
With Joe Riordon's trial imminent, and with two attempts on his own life, Tom discovers that his previous statements have disappeared, and his friend Gaurda officer Finbar Reeve, comes to England to persuade him to go to Ireland to give his evidence in court. With the support and encouragement of Fin, Anne Pentaligon, a new friend, and her barrister brother Adam, Tom heads for a secret location at Kildermy Priory while he waits for the time to come for him to give his testimony. Once at court he faces his nemesis and gives his evidence. He is able to make a final reconciliation with the mother of the missing boy.