DIPLOMATIC IMMUNITY begins with a gratuitous "teaser," an apparent murder attempt on a scuba diver. It's all in good fun, as it turns out, though novices should note that tearing away a buddy's regulator is not
recommended for underwater amusement.
After scuba-diving at the beach with her father, hardened Vietnam vet and US Marine instructor Cole Hickel (Bruce Boxleitner), lovely Ellen (Sharon L. Kase) deserts him for a date with Klaus Hermann (Tom Breznahan), a Paraguayan national of aristocratic, presumably Nazi, German descent. Hickel,
who has no other family, disapproves of his daughter's clean-cut but shady boyfriend, and he's tragically right: Klau...