Warehouse 13 season 4

The fourth season of the American television series Warehouse 13 premiered on July 23, 2012, on Syfy. The season consists of 20 episodes, and aired on Mondays; the first ten episodes aired at 9 pm, but the series moved to a 10 pm timeslot starting with the eleventh episode. The show stars Eddie McClintock, Joanne Kelly, Saul Rubinek, Allison Scagliotti, Genelle Williams and Aaron Ashmore.

Main

 * Eddie McClintock as Pete Lattimer
 * Joanne Kelly as Myka Bering
 * Saul Rubinek as Artie Nielsen
 * Allison Scagliotti as Claudia Donovan
 * Genelle Williams as Leena
 * Aaron Ashmore as Steve Jinks

Special guest

 * Anthony Michael Hall as Walter Sykes
 * Brent Spiner as Brother Adrian
 * James Marsters as Bennett Sutton / The Count of St. Germain
 * Polly Walker as Charlotte Dupres
 * Anthony Stewart Head as Paracelsus
 * Joel Grey as Monty the Magnificent

Recurring

 * C. C. H. Pounder as Mrs. Irene Frederic
 * Roger Rees as James MacPherson
 * Jaime Murray as Helena G. Wells
 * Kate Mulgrew as Jane Lattimer
 * Sasha Roiz as Marcus Diamond
 * Faran Tahir as Adwin Kosan
 * Kelly Hu as Abigail Cho
 * Josh Blaylock as Nick Powell

Guest
• Sam Huntington as Ethan

• Amy Acker as Tracy Bering

• Jeri Ryan as Amanda Lattimer

• René Auberjonois as Hugo Miller

• Lester Holt as himself

• Ed Schultz as himself

• Laura Innes as Emma Jinks

• Brian J. Smith as Jesse Ashton

• Dee Wallace as Mrs. Garner

• Lindsay Wagner as Vanessa Calder

• Mike Dopud as Mike Madden

• Kirsten Nelson as Judy Giltoy

• Timothy Omundson as Larry Kemp

• Danielle Nicolet as Deb Stanley

• Pooch Hall as Cody Bell

• Thomas Roberts as himself

• Emily Bergl as Autumn Radnor

• Patrick John Flueger as Park Ranger Evan Smith

• Missi Pyle as Lily Abbott

• America Olivo as Rebecca Carson

• Enrico Colantoni as Anthony Bishop

• Steve Valentine as Val

• Todd Stashwick as DA Holgren

• Tuc Watkins as Nate

• Ricardo Chavira as Detective Briggs

• Charlie Weber as Liam Napier

• Cynthia Watros as Janice Malloy

Special appearance by

 * Cherie Currie as herself

Production
On August 11, 2011, it was announced that Warehouse 13 was renewed for a fourth season of thirteen episodes to air in 2012. On January 13, 2012, Syfy extended the order by seven episodes, bringing the total to twenty episodes. On May 15, 2012, Allison Scagliotti announced on Twitter that Season 4 will debut on July 23, 2012. Brent Spiner and Sam Huntington are set to join season four as guest stars, with Spiner to play Brother Adrian, leader of an intensely secretive sect; and Huntington as Ethan, a jazz musician. Aaron Ashmore was upgraded to a series regular in episode three "Personal Effects". For the second half of the season, Polly Walker will appear in several episodes as Charlotte Dupres. In April 2013, it was announced that Anthony Head had been cast as a villain named Paracelsus, and would appear in the final three episodes of the fourth season.