The drama that Emmy is mad about makes its long-awaited return to reveal what has become of haunted adman Don Draper (Jon Hamm) since he's proposed to young Megan (Jessica Pare).
Hint: Don's protegee Peggy (Elizabeth Moss) says his changed demeanor "concerns me."
As expected, the swinging '60s time period, with its backdrop of civil unrest, is marvelously realized.
The main attraction, though, is Mad Men's smoky swirl of characters: enigmatic, mesmerizing and sorely missed.
Catch the two-hour season 5 premiere this Sunday on AMC at 9/8c.
VIDEO: Mad Men Season 5 Promo!
PHOTOS: January Jones' best red carpet moments
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Selena Gomez, Zoe Saldana, and Maggie Gyllenhaal all get an F on this week's Fashion Offenders.
Find out which stars attended Jennifer Lopez's birthday celebration on today's Celebs Gone Social.
Get the scoop on Naya Rivera's wacky wedding on Replay hosted by Wonderwall's Kirby Kristen.
Cameron Diaz, Rumer Willis, and Ellie Goulding all get an F on this week's Fashion Offenders.
Let's check out some of Eva's tactics behind her baby bump secret on Replay hosted by Wonderwall's Kirby Kristen.
See how Taylor Swift has been rocking red over the years.
From Beyonce to Jennifer Lopez, see how these stars keep their figures trim.
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