Magnum, P.I. - Season 5 Episode 12 : Little Games 1988

Higgins is outraged when Thomas's game playing crashes the estate's security computer system, thereby jeopardizing the selection of the estate for an upcoming multi-million dollar jewelery design competition; Thomas enlists Mac's help in reprogramming the computer in exchange for bailing him out of jail after he's been arrested for possession of stolen goods; after challenging Krista, the insurance company's wily security investigator who learned her trade at the knee of her jewel thief father, to test the Estate's security system after Mac gets the system up and running again, Thomas discovers that Mac has greatly overstated his programming abilities and that Krista has greatly understated her father's retirement.