Harlan Coben on "Shelter" | Ed Sheeran on "Autumn Variations" | Stefon Diggs on Preparing for NFL Season

"48 Hours" investigates the death of Illinois woman Becky Bliefnick, who was found dead in her home, and her estranged husband Tim Bliefnick, who was charged with her murder. "48 Hours" correspondent Erin Moriarty joins "CBS Mornings" with her exclusive interview with Tim Bliefnick, who maintains his innocence.Bestselling author Harlan Coben joins "CBS Mornings" to discuss his new television mystery series, "Harlan Coben's Shelter." Based on Coben's 2011 young adult novel of the same name, the series revolves around teenager Mickey Bolitar who gets immersed in his own mystery after a classmate disappears. Coben discusses being creator and executive producer of the adaptation, tackling young adult fiction and his love of storytelling.Professor Heather Cox Richardson's latest book, "Democracy Awakening: Notes on the State of America," explores the history of the United States and the current state of American politics. Richardson, who gained popularity from her newsletter, "Letters From An American," joins "CBS Mornings" following the book's release this week.For our "Countdown to Sunday series," co-host Nate Burleson visits with Buffalo Bills Pro-Bowl wide receiver Stefon Diggs at the Gatorade Sports Science Institute ahead of the start of the 2023 NFL season to discuss how he prepares his body for the upcoming season and how his family drives him.Ed Sheeran is out with his second album of the year, "Autumn Variations." "CBS Mornings" co-host Gayle King listened to it exclusively with the singer, who discussed the inspiration behind the record and shared how he feels about being called a pop star. He also talks about why he's managing his expectations for this release.