Magnum, P.I. S03 E03 Ki'i's Don't Lie (I)

"He's a Hellraiser in Paradise."

A team of private investigators fly to Hawaii to recover a valuable and deadly native artifact, and find themselves in conflict with private investigator Thomas Magnum, Higgins, and a beautiful (but larcenous) socialite. The crossover continues on Simon & Simon S02E01 Emeralds Are Not a Girl's Best Friend (II).