Hi, Park enthusiasts. I'm your host, Dilya DeAmbra, and today our story takes place in the town of Bamp Canada, the highest town in the entire country.

This scenic town sits over 4,500 feet above sea level, but it also has sections that go really deep underground.

One of those areas is known as Castle Guard Cave, and it has twists and turns that one minute make you think you're going in the right direction, but then those paths lead to a dead end.

The nature of this crazy cave system reflects the same situation the Royal Canadian Mounted Police found themselves in in May 1990.

A murder investigation unfolded that seemed to drag on forever, with twists and turns that would turn all of Canada and the small town of Biff completely upside down.

This is Park Predators.

Around 8 o'clock on the night of May 16, 1990, Cab Driver Larry Landrow hears a woman's voice chirp over his company's radio system.

The voice is 23 year old Lucy Turmel. She's calling to let everyone already working know that she's signing in for the night to start her taxi cab shift.

The business that Larry and Lucy work for is called the Taxi Taxi Cab Company, and they operate in the resort town of Bamp Alberta.

For the next few hours, Larry and Lucy run their individual fares for customers, typically going to and from the downtown area.

A lot of the customers wanted to go there for a good time, go out to dinner, or end up at a nightclub.

According to an episode of Unsolved Mysteries, at 140 in the morning, Lucy is finishing up the tail end of her cabbyshift, and she pulls her taxi onto a street called Spray Avenue.

Spray Avenue is right in front of a bar in downtown called the Works Nightclub.

The club wasn't a free standing place. It actually sat inside the Bamp Springs Hotel.

But it had a convenient driveway area that taxi drivers would often use to catch customers who wanted to ride home.

Now Larry just happened to be parked in that area too, and he was next in line behind Lucy to get clients.

Because the Works Nightclub is so popular, good cabbys knew to go there to form their own queue to wait for clients to come out.

There was sort of an unspoken rule that whoever was first in line would get customers and then leave, and then the next driver would pull up and sew on and so forth.

While they're waiting together in line, Larry and Lucy start talking about their rides for the night, and how much money they'd made.

Lucy tells Larry that she only made a little over $100, and was hoping that her next shift would be better.

She told him that at this point, she was really tired for the night, but was going to do one more ride to get the next group of people coming out,

and then she would clock out for the night.

...