Grijpstra and de Gier are being blackmailed. A wealthy yacht owner and his son want the retired policemen to investigate tilt hijacking in the Caribbean of an entire cargo of oil from a supertanker. The threat is a serious one: to set the income tax authority on them. Together with the commissaris, the Amsterdam cops agree to take the case. Their rendezvous is Key West where they are confronted. by a murder. The commissaris must see that justice is done to all parties.
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