You'd think that Irwin Allen had exhausted the "disaster" genre by 1979. Think again: 1979 was the year that Allen put together the made-for-TV movie Cave-In. Once again, a diverse group is trapped in a perilous situation; this time they're caught in an underground cave-in in an anonymous national park. The dramatis personae includes park ranger Dennis Cole, Cole's ex-lover (and state senator) Susan Sullivan, and fugitive convict James Olson. Also ensconsed in the subterranean tomb are Leslie Nielsen, Julie Sommars and Ray Milland. Cave-In was shelved for nearly four years after its completion: it was finally given a network showing on June 19, 1983.