Lester Holt

They're not.

Over the next few months, police gathered more video of that Prius from cameras on local buses and spotted something else, a SunPass toll tag on the Prius windshield.

Investigators suspected the car had traveled from out of town, and it turned out that SunPass had dinged at toll sites on I-75 between Miami and Tallahassee at times that fit the window of the shooting perfectly.

The SunPass business account came back to a small car rental agency in North Miami.

The renter won Luis Rivera.

Also on the paperwork, cops found a cell phone number that led them to another man, a close friend of Rivera's.

Sigfredo Garcia and Luis Rivera, two names already known to law enforcement.

Both were from the Miami area and had criminal records.

Garcia had been arrested for robbery and burglary, and Rivera was a member of the Latin Kings gang.

A little more investigation turned up bank records.

And they were able to locate a withdrawal from a bank down in Pembroke Pines.

There on the day of Dan Markell's murder were their two prime suspects, together in a silver Prius that was a perfect match for the vehicle seen stalking Dan.

It had taken investigators nearly two years to put the puzzle pieces together.

And in the summer of 2016, Sigfredo Garcia and Luis Rivera were arrested and charged with the murder of Dan Markell.

But it was anything but case closed.

It was not a random act that they came up here for him.

I mean, the police have called this a murder for hire, and these guys didn't hire themselves.

Investigators discovered that right after Dan Markell's death, the two men went on a spending spree, buying cars and motorcycles.

It seemed they'd come into major amounts of discretionary cash.

But where had it come from?