Problem, John, is that the vaccine only works if you take it.

Now, I'm Chris Cuomo, welcome to Primetime.

The investigation into the death of Gabby Petito

had a major development today.

We do have new details surrounding her possible murder.

But there's also an emerging question

in the authorities desperate search

for Gabby's fiance, Brian Laundrie.

Today, divers waited through a swampy nature reserve

in Venice, Florida searching for Laundrie.

Teams have been calming the area, ATVs, dogs,

choppers, drones, been going on for days.

Question, are they in the right place?

Now, we know that authorities are there for two solid reasons.

Laundrie's parents told investigators

he left their home on September 14, Tuesday,

to go to the Carlton Reserve, and that he never came back.

Second, his car was found there.

But what if he never entered the park?

Could this be a ruse?

The parents are said to be concerned

that their son may be missing because he heard himself.

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