So, what's the deal, Sally Stukowski? The agents interrogate this killer on "The 40th Floor."

What, exactly, is up with Artie's friend Leena on Warehouse 13? Fans of that series have been wondering throughout season one.

Not much is known about Mrs. Frederic. But in the series premiere of Warehouse 13, she recruits Pete and Myka for their new mission.

Claudia Donovan is seen here on the set of a movie, courtesy of the 7/20/10 episode. The character is played by Allison Scagliotti.

The three main characters in Warehouse 13 gather around. This shot is taken from the series premiere.

Kate Mulgrew is included in this Warehouse 13 scene. She's on board as Jane Lattimer.

There's a good reason why Myka and Pete have this look on their faces: they are staring a zombie eating a deer.

On the series premiere of Warehouse 13, Myka and Pete do their jobs as Secret Service agents very, very well. A bit too well, considering where they soon end up.

Deb Stanley (Danielle Nicolet) looks out at Warehouse 13 in amazement. She gets a visit when she follows Pete home on "Endless Wonder"

Can Artie figure out why a mysterious artifact showed up in a gated community on Warehouse 13? "What Matters Most" is the 17 episode of the show's fourth season.

Artiel leads Pete and Myka down a mysterious hallway during the series premiere of Warehouse 13. The latter two have no idea what they are in for.

After the Warehouse is destroyed, the team searches the world for a missing artifact on the season premiere of Warehouse 13. "A New Hope" is the first episode of the show's fourth season.