"Grey's Anatomy" Season 10, Episode 15, "Throwing It All Away" takes a closer look at the Calzona ship. Callie (Sara Ramirez) and Arizona (Jessica Capshaw) seem to be going from okay to broken yet again. 'Grey's' creator Shonda Rhimes teases on Twitter "a really special look into Arizona's world." Meanwhile, will Jolex (Jo Wilson and Alex Karev) be dealing with a baby?

Spoiler alert: This feature contains minor spoilers on Grey's Anatomy Season 10, Episode 15, "Throwing It All Away." This week's new episode airs on ABC on Mar. 13. Read at your own risk.

Jessica Capshaw shares with Grey's fans her excitement over this season's Episode 15. On Twitter, the actress hinted she has some important scenes in the latest episode of the series.

"GA lovahs! I have some unbelievable treats for you on Thursday. So exciting and mind blowing to see just how talented the peeps at GA are," Jessica tweeted. Calzona seemed to have almost fully repaired their marriage in Grey's Anatomy Season 10, Episode 13. But things could be turning for the worse.

Watch the promo video for Grey's Anatomy Season 10, Episode 15. (Scroll down to play the clip or go to this YouTube page.)

Meanwhile, Jo Wilson (Camilla Luddington) could encounter a "dumpster baby" on the same day that Alex Karev (Justin Chambers) is out of Grey Sloan Memorial on suspension. Jo, who grew up a foster child, could have strong emotional attachments to this baby. Would she reconsider Karev's rather informal and spontaneous proposal?

The official ABC synopsis for Grey's 10x15 mentions "one doctor's suspension." Karev is the top candidate among fans. Jolex was found in violation of the new non-fraternization policy. Karev's throwing a fit at the Grey Sloan board meeting, calling everyone a "hypocrite," just makes things worse.

Grey's Anatomy Season 10, Episode 15 spoilers also indicate a conflict between Callie and Derek (Patrick Dempsey). The POTUS project means Derek would leave Grey Sloan and his brain-cartilage therapy project with Callie will be shelved.

Geoffrey Arend ("Body of Proof," "500 Days of Summer") guest stars on Grey's Anatomy 10x15 as a kidney donor who is looking into getting his vital organ back.

Watch: Grey's Anatomy Season 10, Episode 15 ('Throwing It All Away') Promo Video (ABC on YouTube)

Here is what Shonda Rhimes has to say about this week's new Grey's episode:

Tomorrow night's #GreysAnatomy gives a really special look into Arizona's world. @JessicaCapshaw does phenomenal job!!

— shonda rhimes (@shondarhimes) March 12, 2014

Grey's Anatomy Season 10 airs Thursdays on ABC.

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