Where Eagles Dare
In July 1966, Kastner and his producing partner Jerry Gershwin announced they had purchased five screenplays from MacLean: "Where Eagles Dare", "When Eight Bells Toll", and three other unnamed ones. (Kastner made four MacLean movies.) MacLean also wrote a novel for "Where Eagles Dare" after the screenplay which was published in 1967 before the film came out. The book was a bestseller, and the 1968 film version was a huge hit.