Nancy Drew: Ransom of the Seven Ships (Part 11): GPS Puzzle, Bat Detecting

Part of a video walkthrough for Nancy Drew: Ransom of the Seven Ships. In this part, Nancy goes to Johnny Rolle to pick up the battery for the bat detector. She also asks Johnny for underwater glowsticks so she can go diving at Blue Hole, and he gives them to her after she programs his GPS. Then, she goes to Bat Steep and uses the bat detector to find the bats that she is looking for.

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