the cop asked. The name tag above his silver badge read âPukui.â
âNobody hurt,â Nancy reported. âJust a little shaken up.â
Hands on his gun belt, Officer Pukui asked, âWhat happened here?â
âA TNT excavation charge went off,â the flagger said, gesturing at the smoking trench. âGood thing the work crew was on break.â He glanced at Nancy. âDidnât you see the sign? Why didnât you turn off your radio?â
âMy radio wasnât on,â Nancy replied.
âIt mustâve been. The charge canât go off by itself!â
âAre you certain of that?â asked Officer Pukui.
âPositive!â The flagger lifted the brim of his safety helmet. âThe charge was armed with a radio detonator. If someone comes too close with an FM radio, the signal can set it off.â
Officer Pukui sat behind the steering wheel and turned the ignition key. The engine purred to life. âSheâs right. The radio wasnât on,â he told the flagger. He turned to Nancy. âDid you leave anything in the trunk? A transistor radio from the beach, maybe?â
âThis is a rental car. We havenât even opened the trunk!â Nancy replied.
The cop switched off the ignition. âIâm goingto try something.â He lifted his walkie-talkie from his gun belt and turned it on. Static crackled harshly. His thumb turned the dial. All at once, a pulsing squeal burst out of the speaker. âSomething in this car is broadcasting at seventeen hundred and sixty-eight megahertz. Thatâs what set off the TNT,â the officer said grimly.
âNed, Bessâhelp me look,â ordered Nancy.
âGot it!â Ned announced after a minute of searching the underside of the seats. He withdrew his hand to show them a small electronic device. The unit was the size of a cigarette case. A tiny operating light on its side glowed green.
âMay I?â Nancy took the unit and examined it closely. Two inscriptions were stamped into the black vinylâone in Japanese, the other in English. The English phrase read âHigashi Electronics, Ltd.âOsaka.â
âWhat is it?â asked Bess.
âA radio transceiverâa bug,â Officer Pukui said, taking it from Nancy. âHigashi specializes in this miniature stuff. This baby can probably transmit fifty miles.â
Fifty miles, Nancy mused. That would cover all of Oahu!
âI sure hope this wasnât someoneâs idea of a joke,â the cop said. âLetting you drive around with a live transceiver under your seat. That explosive charge could have killed you and a whole lot of innocent bystanders.â
Satisfied that Nancy and her friends were notat fault, Officer Pukui took their statements and gave them the transceiver. They continued on their way after Nancy had disabled the bug.
As they drove through downtown Honolulu, Ned said, âNancy, do you think that was done on purpose? Did somebody try to get us blown up?â
Nancy shook her head. âI doubt it. For one thing, they had no way of knowing we would drive by any construction site, let alone that one. No, somebody decided to eavesdrop on us.â
âWhen do you think it was planted?â asked Bess.
âProbably last night. Anybody could have walked by our car in the Ala Wai lot, opened the door, and stuck that thing under the seat.â
Ned cast her a curious sidelong look. âDo you think it might have been someone from the Malihini Corporation?â
âCould be. Or it could just as easily have been the moon-faced man. Or somebody else.â Nancy let out a deep sigh. âAll we really know is, someone is awfully interested in what we talk about! Letâs go pick up George.â
Her face was grim. Someone was hunting themâthat was certain. Some faceless, ruthless enemy was tracking them back and forth across the island.
And Nancy hadnât the