Lee H. Katzin Director Efrem Zimbalist Jr. David Martin Actor Dan Haggerty Nick Willis Actor Tovah Feldshuh Jeannie Devereux Actor Lonny Chapman Earl Logan Actor Ike Eisenmann Eric Mangus Actor Steve Franken Paul Gladstone Actor Bruce French Eli Nathanson Actor Richard Herd Col. Mangus Actor Joe E. Tata Groves Actor Ellen Blake Agent Actor Philip Baker Hall Starrett Actor Poindexter Yothers Mike Actor Charles Hallahan Tribbles Sr. Actor Charles Tannen Actor Melinda Peterson Computer Operator Actor Tony La Torre Tibbles Jr. Actor Bill Quinn Old Dermott (uncredited) Actor Gwen Van Dam Ms. Logan Actor Norman Gary Finley Dermott Actor Peter Nelson Producer