How did Supergirl find the place?
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There_Is_No_Sayid — 9 years ago(November 24, 2016 07:30 AM)
I assume she followed a sonic signal.
I think the bigger question is how Cadmus heard what Supergirl was saying. They presumably broadcast on a frequency which only she could hear (which has been don before). But how did they hear Supergirl's response when she's just randomly flying around.
Unless Alpert's covered in bacon grease, I don't think Hugo can track anything.