Jill Biden's ex-husband William Stevenson pleads not guilty to murder

William Stevenson, the 77-year-old ex-husband of former First Lady Jill Biden, pleaded not guilty to first-degree murder charges in Delaware on Tuesday following the death of his current wife.Authorities discovered 64-year-old Linda Stevenson unresponsive at the couple's home on December 28 after responding to a domestic dispute, leading to the arrest of William Stevenson on February 3.William Stevenson, who founded the Stone Balloon music venue, remains in custody on $2 million bail until a March 16 hearing while Jill Biden has declined to comment.