like Rawhide (1959-66), Bonanza (1959-73), Lawman (1958-62), and more recently had worked on a string of Clint Eastwood films - Play Misty For Me (1971), Dirty Harry (1971), High Plains Drifter (1973) and The Enforcer (1976).  Incredibly, the studio was dissatisfied with the result and requested another rewrite ( Starlog ).