Ashley Flowers

Passengers on the flight confirm that Joan definitely made it onto the plane.

They say she seemed relaxed for like the whole flight, which landed at Logan Airport around 10.30 p.m.

And then a few Harvard students who flew that same day tell police they saw Joan in the terminal, too.

One friend even remembers talking to her at baggage claim.

Joan had this, like, carry-on tote.

She had her purse, but she was also waiting on a bag, this, like, dark suitcase with unique striping.

Now, when the bag comes, she just grabbed it and headed out to ground transportation.

And she told at least one person at the airport that she planned to take a cab straight to her dorm, which is what her family knew her plan to be, too.

Her dad had even given her 70 bucks in cash for the cab ride back to her dorm.

So Joan walking to the exit is the last confirmed sighting of her by anyone who knew her.

But the best lead that police get is actually from someone who doesn't even know her at all.

Sometime in the first week of the investigation, this cab driver comes forward and says that around 10.45 p.m.

that night, a woman matching Joan's description said,

came up to his cab outside the terminal, like knocked on his window and asked Cambridge, right?

That's where Harvard is.

Feels a lot like Joan.

But the woman wasn't alone.

According to the driver, an older man was with her.

Not like old, old, but like older than the 25-year-old Joan, right?

And the driver thought maybe this guy's like in his 40s.