The Office

The new Regional Manager of Dunder Mifflin is revealed and faces a crisis -- two-time Emmy winner James Spader joins the cast.

Robert California (James Spader) challenges the Scranton branch to double sales.

All the warehouse workers win the lottery.

Andy throws a garden party at Schrute Farms -- Josh Groban, Stephen Collins and Dee Wallace guest star.

Fears are revealed on the spookiest Halloween in Dunder Mifflin history.

Dwight starts a system to find mistakes in the office.

Pam trains a temp to take her place while she is on maternity leave.

Andy takes the office on an inspiring field trip to Gettysburg -- Lindsay Broad guest stars.

Meet Mrs. California -- Maura Tierney and Lindsay Broad guest star.

Andy grants everyone's holiday wishes.

Andy tries to find a way to meet his goal of doubling sales.

Robert's last hurrah.

Jim returns from jury duty - Jack Coleman guest stars.

Dwight is assigned a special project.

Dwight is on a mission to get noticed at Corporate - Catherine Tate ("The Catherine Tate Show") joins the show.

Andy makes the office stay late..

The Florida team readies the new Sabre store.

After Robert California (two-time Emmy winner James Spader) reveals that he hates Nellie's (Catherine Tate) business plan, Jim (John Kraskinski) tries to save Dwight (Rainn Wilson) from being fired. Meanwhile, Andy (Ed Helms) learns that Erin (Ellie Kemper) isn't coming back to Scranton.

Andy takes a road trip to change his life.

The office throws a welcome party for Nellie.

Andy returns to the office to quite a shock.

Andy makes a splash at a local fundraiser.

Who gets all the clients left behind?

Dwight offers free family portraits for the office. Andy (Ed Helms) returns to Dunder Mifflin as a janitor, harboring a secret plan.