From Wikipedia: "When Stephen King's novella
Apt Pupil was published as part of his collection
Different Seasons in 1982, producer Richard Kobritz
optioned feature film rights to the novella. Kobritz met with actor
James Mason to play the novella's war criminal Kurt Dussander, but Mason died in July 1984 before production as a result of a heart attack. The producer also approached
Richard Burton for the role, but Burton also died in August that same year. By 1987 production on the film began with
Nicol Williamson cast as Kurt Dussander, and 17-year-old
Rick Schroder was cast as Todd Bowden. In that year,
Alan Bridges began direction of the film with a script co-written by
Ken Wheat and his brother Jim Wheat. After ten weeks of filming, the production suffered from a lack of funds from its production company Granat Releasing, and the film had to be placed on hold. Kubritz sought to revive production, but when the opportunity came a year later, Schroder had aged too considerably for the film to work. Forty minutes of usable footage was abandoned."