Any problem--worldwide. I can help you solve it. Absolute confidentiality. Min. fee 30,000. Mr. Devlin, Box 750, Radio City Station, New York."" Devlin, the phantom avenger, is hired by multibillion--dollar Petrolux Oil, which has an island in the Persian Gulf now under siege by German terrorists working for the cause of landless Bahwabi Muslims. The world's extremists must not be allowed to know that Petrolux is such a sitting duck, with its hundreds of oil-storage tanks on this tiny island, so Devlin must be discreet in his assault on the terrorists. He secretly chutes onto the island and sets about organizing a commando unit out of the island's prisoners, including four experts in hardware. The rest is just a matter of artillery, fire-power, and target practice. For weapons-lovers only--but even they won't believe a second of it.