Waldo Brian Donlevy (February 9, 1901 – April 6, 1972) was an American actor of film, stage, television, and radio. He appeared both in leading and supporting roles in Hollywood, and was noted for playing dangerous and tough "heavies", often in films noir. He was nominated for an Academy Award for Best Supporting Actor for his role in Beau Geste (1939). Donlevy was also known for starring as Steve Mitchell on the radio/TV series Dangerous Assignment (1949–53), and for portraying Bernard Quatermass in the science-fiction horror films The Quatermass Xperiment (1955) and Quatermass 2 (1957), by Britain's Hammer Film Productions. (Via Wikipedia)