Twice in July of 1939 a pair of swimmers were pulled under while in the eddys of the Cross River near the marina.
The police brought in Catlin Lonestar, a former diver for the US Navy. Armed with an especially adapted Thompson submachine-gun, Catlin descended into the darkness.
He was submerged for nearly three hours, and when he finally emerged he was pale and shaken.
When asked what had occurred, Catlin responded, “There was more than one.” Catlin never described what he saw, and the only further remark he had on the subject was that they, “Took their wounded and dead with them.”
No other attacks were recorded, so the department considered the operation a success. Catlin never swam again.