Delia D'Ambra

What I really wanted to know, though, was what they'd been up to in the days after Duane's murder.

If the slaying occurred on the 8th, like the ME estimated, but Robert and Jennifer weren't arrested until the 18th, that's 10 days they were unaccounted for.

According to court documents and testimony from a GBI agent who worked the case, investigators determined the couple had spent some of that time traveling to a car dealership in North Carolina, where Robert showed up for a job interview.

Apparently, staff at that dealership had no idea he was coming, though, and after having him sit around for a while, they eventually ended up asking him to leave.

Turns out, on top of popping in out of the blue, the employees said Robert had acted, quote-unquote, very weird the whole time, like he was under the influence of meth.

Records and surveillance video from a hotel the couple stayed at on December 9th showed they paid in cash for their stay, but really after that, they were in the wind.

According to the GBI, after the car dealership visit, both Jennifer and Robert later turned their phones off.

But that didn't mean police couldn't still see their activity prior to then.

It seems that either from witnesses or reviewing additional calls and texts from the trio's devices, that on the morning of December 8th, the day the ME believed the murder had occurred, Jennifer and Robert had met up with a man who was coordinating a drug deal for them in Tennessee.

And that guy had witnessed Jennifer physically hit Dwayne in the head more than one time.

This witness later told authorities that in his opinion, it seemed Robert and Jennifer were spending Dwayne's money and taking his pain medication.

One reason this guy suspected that was the case was because over the course of several hours he spent with Dwayne and the couple, Jennifer and Robert had paid him roughly $1,400 in cash to purchase meth.

And I guess it was noteworthy to this guy that the pair had been able to come up with that amount of money so easily despite being on the road.

Based on what investigators had found, neither Jennifer or Robert were actively or steadily employed in December 2015, and they had not been using their own personal bank cards or finances to fund their travels or drug purchases.

So the natural assumption was Dwayne's money was paying for everything.

To further corroborate this information, authorities went to multiple motels in Georgia and Tennessee to find video surveillance of the trio together and determine if Dwayne had paid for any of the rooms.

At several places, there was footage available that proved Robert, Jennifer, and Duane had all checked in together at various establishments.

Subsequent cell phone records also showed that throughout the road trip, the trio had communicated with at least four different sex workers, one of whom they'd dropped Duane off with for a few hours in Cleveland, Tennessee.

Unfortunately, despite authorities' efforts to interview that sex worker, they were never able to track her down for an interview.

The big question that authorities had to try and answer was why.