Actor who played the role of Jim Phelps on TV's Mission Impossible in both the original from 1967-1973 and its revival from 1988-1990.
He was born Peter Aurness but eventually took the name Graves to honor his mother's family.
His brother is American actor, James Arness.
He married Joan Endress in 1950, and together they had three daughters.
He was in the Mission Impossible TV series with Greg Morris.