CHAPTER VIII
The Strange Letter
The engine roared as Frank Hardy opened the throttle and bore down on the helm of the Sleuth.
The grip of the current about the reef was so strong that, for a moment, it seemed that the motorboat could not fight against it. Then, slowly, the craft swung about, seemed to remain motionless for a moment, and then began to forge ahead, away from the reef.
Fighting against the force of the current, the motorboat made slow progress. Still, it was gaining ground. The boys waited tensely, as the craft struggled out of danger. Gradually, the Sleuth drew away from the reef, gradually the grip of the current relaxed. Frank cautiously nosed the boat over to the left and managed to get out of the current altogether.
The whole affair had occurred in a few seconds, but it had seemed an eternity to the boys in the boat and their chums in the other craft.
It would only have been a matter of moments
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