MacLean reuses the assassination-attempt formula, cuts himself in on a high stake game, and plays it for all it's worth--a half a billion dollars. More than traffic is stopped on the Golden Gate bridge when the motorcade of the president of the US, an Arab king and an Arab prince, and two ministers are halted by a real megalomaniac, Peter Branson, whose asking demands are $300,000,000 for their lives and $200,000,000 for the bridge--wired to go off. ""Good God."" ""He won't help."" But Paul Revson, plain-clothes FBI super-operative is on hand to deactivate the mechanisms, frighten off all of Branson's aides, and surprise Branson himself during the televised spectacular held mid-stream, you might say. Barely there is a pretty press correspondent April Wednesday, but then there's not much time for her while there's lots else to usurp the attention of MacLean's steady transceivership.