Get your calendar out, ABC Family fans, and prepare to program your DVR.

The network has announced the return dates for Greek and Pretty Little Liars: Monday, January 3.

Dish on the return of these shows in our Pretty Little Liars forum!

We've posted the full press release below:

The mystery and ominous messages continue for best friends Emily Fields, Spencer Hastings, Hanna Marin and Aria Montgomery in the mid-season return of ABC Family’s hit series “Pretty Little Liars.” No longer just threatening to reveal secrets, the all-knowing “A” has stepped up the game and nothing is off limits in the second half of the first season. And while they work hard to protect what they know, the four girls are also on the hunt to learn the truth about what happened to Alison the night she disappeared. But when those truths start to come out, will the Liars be prepared for what they must face when new secrets are revealed? “Pretty Little Liars” returns with all-new episodes on Monday, January 3, 8:00PM–9:00PM ET/PT.

As “Greek” heads into its fourth season, the storylines turn to the post-graduation experience for Casey, Ashleigh and Evan, while the undergrads must continue to deal with life on campus. The new season promises surprise pairings with new rivals, unexpected allies, as well as unpredictable romances.  Viewers will see the characters taken in new directions, including some unanticipated turns, and die-hard fans of the college series will be treated to throw-back references from past seasons.  Throughout the season, fans will also see the return of featured guest stars including Charisma Carpenter, Sam Page, Martha MacIsaac, Nora Kirkpatrick and Tiffany Dupont, who returns as Frannie. “Greek” will return with all-new episodes on Monday, January 3, 9:00PM– 10:00PM ET/PT.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.