The VengeancePaperback, 15 April 2018

Thirty years after Hooker's betrayal and the massacre at Cao-Dinh, Shelton discovered he had the next best thing to a son ... and lost him immediately. Filled with hatred and rage, the adventurer methodically tracks down Mrs Yoon, Hooker's right arm and murderer of Tran. It's a long and obstacle-strewn quest, but Wayne is a professional. Which does leave the hardest question of all: what will he do once he's found his old nemesis?