Nick and Katrina's persistence while investigating haunted locations leads them to some shocking discoveries.

This house is incredibly active and full of dark energy.

As they investigate a haunted mansion they are physically attacked.

Even after leaving the Hinsdale House it calls Nick and Katrina back.

There's an angry spirit that wants them out of this house.

This old infirmary is full of paranormal activity. Is it a welcome or a warning to the former residents?

Nick and Katrina hear from a spirit and it knows their names.

They've caught a strange mist on camera. Could it be the spirit of a young girl?

Nick and Katrina have made contact with Emma, a child who died more than 100 years ago.

Not surprisingly Nick and Katrina agree that the most shocking moment of this investigation was the physical attack on their cameraman.

Nick and Katrina feel a presence in the room and then capture the voices of entities on the geobox.

The Paranormal Lockdown team capture an entity on camera that looks like a creeper. Do you see it?

Nick and Katrina take you inside the most intense moments of their lockdown at the Trans-Allegheny Lunatic Asylum.

If he weren't a paranormal investigator he'd be shooting hoops. Learn more about Nick Groff from Paranormal Lockdown!

Nick and Katrina beckon spirits and one contacts them in a very personal way.

Katrina Weidman seeks out ghosts for a living but there's something else that she finds scarier. Learn more about the star of Paranormal Lockdown!

Nick and Katrina hear from a spirit and it knows their names.

As they investigate a haunted mansion they are physically attacked.

The team goes in search of a bigfoot called the Siberian Giant.

Armed with eyewitness accounts, the latest technology and decades of backwoods tracking experience, the team heads to Zone 22 in Central Alaska to investigate reports of a bigfoot-like creature.

An Alaska-based monster tracking team heads to Central Alaska to investigate an aggressive Bigfoot who has the locals on edge.

Legend has it, an 800-pound creature known as "The Bushman” has inhabited this area for centuries, and it doesn’t like humans.

The Alaska Monsters crew heads to Central Alaska to investigate an aggressive Bigfoot who has the locals on edge. Using a drone, they uncover shocking evidence.

According to legend, a gigantic wolf-like creature rumored to once inhabit the Headless Valley in the Yukon has migrated west and brought along his decapitating bite with him. These two men attempt to fight off an attack.

The team investigates reports of a massive wolf that folklore claims has the ability to bite off the heads of its unsuspecting victims. But while looking for the elusive creature they come across another big legend….Bigfoot.

The team thinks they're close to the Wind Walker bigfoot.

The team is on the trail of the Yukon Howler bigfoot when they come across a snow structure.

The team investigates the legendary Otterman, known by Alaskan natives as the "Kushtaka," who is believed to have the ability to shape-shift. One man has photographic evidence of its existence.

The team heads to Southern Alaska outside of Knik to investigate the Otterman, who reportedly has the ability to shape-shift. Native folklore claims the creature uses this ability to lure humans to their demise. One team member finds out the hard way

The team goes in search of the Water Stalker bigfoot and has a close encounter.

With the help of a GPS tracking system they installed, the team is on the run, from start to finish, during the midnight hunt.

The team heads deep into the Alaskan Interior outside of Fairbanks to investigate reports of a gigantic bear-like creature known as the Northern Giant.