Twin Peaks actor Warren Frost has died at the age of 91.
Frost, the father of the cult drama's co-creator Mark Frost, played Dr Will Hayward in the original TV series and the upcoming sequel.
He also had recurring roles on comedy show Seinfield and legal drama Matlock.
In a statement, Mark Frost said: "We're saddened today to announce the passing of our dear old dad, Warren Frost.
"From the Normandy shores on D-Day to his 50-year career on stage and screen, he remained the same humble guy from Vermont who taught us that a life devoted to telling the right kind of truths can make a real difference in the lives of others.
"We're grateful to have shared him with the world for as long as we did."
Frost died after a lengthy illness, his family said.
He reprised his Twin Peaks role for the follow-up to the classic 90s series, which is due to air on Sky Atlantic in May.
He portrayed Mr Ross in Seinfield, the father to George Costanza's ill-fated fiancee Susan, and played pal Billy to Matlock star Andy Griffith's character.
Frost is survived by his wife of 68 years, Virginia, his three children - Mark, Scott and Lindsay - and three grandchildren.