The first of four projects that Barbara Anderson (Eve) and Robert Reed (Jerry) would work together on over a 12-year span. The next was five years later in Hit (1972), followed by the television movie SST: Death Flight (1977), and finally The Meighan Conspiracy (1979).
Future M*A*S*H (1972) star Mike Farrell played a bellhop both here and in another 1967 project: The Graduate (1967).