IN PHOTO: Actress Ellen Pompeo of 'Grey's Anatomy'
IN PHOTO: Actress Ellen Pompeo, of the series "Grey's Anatomy," arrives at the 2013 People's Choice Awards in Los Angeles, January 9, 2013. Reuters/Danny Moloshok

“Grey’s Anatomy” Season 11 episode 17 is expected to reveal the woman who answered Meredith’s phone call to Derek. Callie raises speculations in the new episode teaser. Meanwhile, actress Scottie Thompson figures in the 11x17 promo video.

Spoiler alert: This update contains “Grey’s Anatomy” Season 11 spoilers. Read on at your own risk if you have not watched up to episode 16, the Mar. 19 episode on ABC.

In “Grey’s Anatomy” Season 11 episode 16, Callie (Sara Ramirez) tells Meredith (Ellen Pompeo) she’s a supporter of “Team Merder.” Titled “With or Without You,” this week’s new episode tests Callie’s support. In a promo clip, Callie speculates Derek (Patrick Dempsey) is acting guilty.

At the end of “Grey’s Anatomy” Season 11 episode 15, Meredith calls Derek, but a woman’s voice answers the phone. At the end of 11x16 episode, Derek shows up at their door. Meredith’s reaction is expected in this week’s new episode.

Meanwhile, actress Scottie Thompson (“The Blacklist,” “NCIS”) figures heavily in ABC’s new episode promos. On IMDB, Scottie’s guest character in “Grey’s Anatomy” Season 11 is Renee Collier. Renee asks Derek in one promo clip whether he has to go.

Callie’s speculation in the promo clip is founded on this sequence of events: Meredith calls, a woman answers, Derek immediately flies back to Seattle. This happens after Callie told Meredith she should not worry about Derek cheating.

The episode synopsis of “Grey’s Anatomy” Season 11 episode 16 also mentions Owen (Kevin McKidd) will be shocked to see his mother at Grey Sloan Memorial. Owen’s budding sexual relationship with Amelia Shepherd (Catherine Scorsone) is expected to be explored further, as well.

Given the episode synopsis and promo videos for “Grey’s Anatomy” 11x17, viewers anticipate Meredith, Derek, Owen and Amelia will be the glue that holds stories together in this Mar. 26 episode. Callie and Karev (Justin Chambers) are supporters in the background of promo clips.

The next new episode of “Grey’s Anatomy” Season 11 is called “When I Grow Up,” airing on ABC on Apr. 2. It remains to be seen whether Scottie Thompson will return for more episodes. The 11x17 episode promo video below was uploaded to YouTube.

Let us know your thoughts on “Grey’s Anatomy” Season 11. For questions/comments regarding the article, you may email the writer at a.paredes@ibtimes.com.au. Any opinion expressed in this article belongs solely to the writer, and its publication is not an endorsement by IBT media.