 Jim Holdaway died in 1970 from a heart attack midway through illustrating the "Modesty Blaise" story "The Warlords of Phoenix", leaving a wife, Audrey and a daughter, Joanna.O'Donnell enlisted Enrique Badia Romero to complete the strip and Romero succeeded Holdaway as the strip's full-time artist.Years later, a painting of Modesty Blaise by Holdaway was used as the cover art for O'Donnell's final Modesty Blaise literary collection, "Cobra Trap".