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Bodies keep surfacing — and so do questions.

There's a dark current in Houston's bayous this year, with 16 bodies recovered, five of them in the same week last month.

City leaders are downplaying speculation about a potential serial killer, but retired NYPD Sgt. Kevin Gannon, who has long espoused the theory that a group known as the " Smiley Face Killers " is responsible for hundreds of suspicious drowning deaths around the U.S., says he believes the deaths may be connected.

"We’ve never seen drowning numbers like this before, especially with a drowning occurring every other day in the same location," he told Fox News Digital.

HOUSTON POLICE DISCOVER 16 BODIES IN BAYOUS THIS YEAR AS MAYOR DISMISSES SERIAL KILLER SPECU

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