Due to the graphic nature of this killer's crimes,

listener discretion is advised.

This episode includes discussions of sexual assault, violence, and murder.

We advise extreme caution for children under 13.

Forensic expert Faes Springer was up late as usual.

She cast her tired eyes over the inventory on the table,

endless rows of petri dishes were spread out before her.

There were dozens to get through and it took hours to review each sample.

It was going to be a long night.

Luckily, the laboratory was where Fae truly came alive.

She took a moment to stretch before placing the next slide on her microscope.

As she leaned in to get a better look, her eyes widened.

Finally, something interesting.

She was looking at some blue fibers found on a victim's dress.

Fae studied the image closely.

The shape and color of the fibers reminded her of something she'd already seen.

She called another criminalist over to take a peek.

She told him she needed to see another sample from the floor out of the suspect's car.

Her colleague eagerly whisked the carpet over.

Fae placed a thread under her microscope and stared silently at the image

as if trying to solve a difficult puzzle.

From time to time, she bobbed her head to the side and jotted down notes.

...