He is known for television roles on Matlock and Seinfeld, and particularly as Doctor Hayward on Twin Peaks, a series co-created by his son Mark Frost.

At the age of 17, he enlisted in the United States Navy during World War II, and served aboard the destroyer escort USS Borum (DE-790) in Europe during the Normandy landings.

[2] Frost spent much of his career in the Twin Cities, teaching at the University of Minnesota and serving as artistic director of the Chimera Theater in St.

Frost's Hollywood work in shows such as Twin Peaks and Matlock was essentially his second career, following his retirement from teaching and stage direction.

Frost appeared in thirty episodes of the series, and reprised the role in the feature film Twin Peaks: Fire Walk with Me although his scenes were cut.