Author James Grant, aka Lee Child, decided to stop writing his well-regarded books, but the world wouldn't let him. So, he came to an arrangement with his younger brother Andrew, who would take over the writing. There would be a transition period with both of their names on the cover - we're in the middle of that period.
In the latest novel No Plan B, famous action-hero Jack Reacher witnesses a murder that everyone thinks was an accident. All he has with him is a toothbrush. A Lee Child book is sold every 9 seconds, and that has added up over time to a number well over a hundred million. And he's won many of the top writing awards.