• Screencapture from the Season 12 finale of 'Grey's Anatomy' that features Ellen Pompei and Kelly McCreary's characters.

Screencapture from the Season 12 finale of 'Grey's Anatomy' that features Ellen Pompei and Kelly McCreary's characters. (Photo : Youtube/ABC Television Network)

"Grey's Anatomy" Season 13 just cast Maggie's (Kelly McCreary) mom, Diane (LaTanya Richardson Jackson), in an upcoming episode.

Entertainment Weekly released an exclusive photo from the set of the hit ABC series showing Maggie with a shocked look on her face the minute she saw her mom walk through the hospital. Diane, on the other hand, is more excited than ever.

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As of late, it is still unclear why Diane decided to drop by the hospital to visit her daughter. But in the previous episodes, Maggie revealed that her adoptive parents were getting a divorce. There are rumors that Maggie's mom could be suffering from a serious illness so she will go to the hospital for treatment.

Maggie is the biological daughter of Dr. Webber (James Pickens Jr.) and Ellis Grey (Kate Burton). Her adoptive mom, Diane, will be featured in the Feb. 9 episode of "Grey's Anatomy" Season 13.

Meanwhile, "Grey's Anatomy" lead star Ellen Pompeo is reminding fans that the release of new episodes for the series will begin on Thursday, Jan. 26. In the video posted on the show's official Twitter account, Pompeo is seen telling fans that TGIT time is the new me time.

TGIT has been the tagline for all three of Shonda Rhimes' shows, "Grey's Anatomy," "Scandal" and How to Get Away With Murder" since they air back to back on Thursday nights.

The three TV series were supposed to premiere on the network last Thursday, Jan. 19, but were moved back to accommodate Donald Trump's pre-inauguration special.

When "Grey's Anatomy" Season 13 returns, fans will know what happened to Alex (Justin Chamber). Details about Owen (Kevin McKidd) and Amelia's (Caterina Scorsone) relationship will also be released. April (Sarah Drew) and Jackson (Jesse Williams) will continue to depend on each other, and Arizona (Jessica Capshaw) and Eliza (Marika Dominczyk) will get to know each other better.

"Grey's Anatomy" Season 13, episode 10 will air on ABC on Jan. 26 at 8 p.m. EST.