1.   All eyes were tuned to a telltale flash from the fin of a striped marlin that was sure to be the cause of the ruckus.

2.   But the sky was partly cloudy, so he strained to look through the patches of blue sky for the American bomber or the telltale flash.

3.   Once, we spotted the telltale flash of a red-winged blackbird and the regal sail of a golden eagle.

4.   The fish charged, I saw the telltale underwater silver flash, then felt the line tighten.