A trio of powerhouse actors - Lindsay Wagner, Sasha Roiz and Rene Auberjonois - will guest star on Syfy's hit series Warehouse 13 Monday, July 25, at 9 p.m. (ET/PT).
In Monday's episode, "Love Sick," Roiz (Caprica) plays the mysterious and sinister Marcus Diamond.
Wagner returns as Dr. Vanessa Calder, the in-house warehouse doctor who is responsible for treating the team - and also has a romantic connection with Artie Nielsen (Saul Rubinek).
Also visiting the warehouse again this season is Auberjonois as Hugo Miller, a computer genius from decades past in the warehouse, who Artie and Claudia (Allison Scagliotti) call to help them out of a life-threatening situation.
The most successful series in Syfy's 18-year history, "Warehouse 13" follows a team of government agents who work at a massive, top-secret storage facility in windswept South Dakota, which houses every strange artifact, mysterious relic, fantastical object and preternatural souvenir ever collected by the U.S. government.
The warehouse's caretaker, Artie, charges Pete Lattimer (Eddie McClintock), Myka Bering (Joanne Kelly), young apprentice Claudia, and newcomer Steve Jinks (Aaron Ashmore) with chasing down reports of supernatural and paranormal activity in search of new objects to cache at the warehouse, as well as helping him to control the facility itself. CCH Pounder plays the warehouse's mysterious caretaker, Mrs. Frederic.