FILE - In this Nov. 16, 2017, file photo, Tom Selleck is shown during Oklahoma Hall of Fame induction ceremonies in Oklahoma City. Selleck is working on a memoir, and it won?t just be about acting. The ?Magnum P.I.? star has a deal with Dey Street Books, an imprint of HarperCollins Publishers. The book, announced Monday, April 8, 2019, is currently untitled and does not yet have a release date.