"Grey's Anatomy" Season 11 is set to feature a highly dramatic episode 4 on Thursday, Oct. 16, 2014. The storyline revolves around the popular characters Meredith and her husband Derek and her relationship with her deceased mother Ellis Grey. Here are few spoilers from "Grey's Anatomy" Season 11 Episode 4 titled "Only Mama Knows." Read on to find out what happens next. [Warning: Spoilers Alert!]

This article contains spoilers from "Grey's Anatomy" Season 11 Episode 4. Read at your own risk.

Last week fans saw Meredith learn the bitter truth of her life. After rummaging through the hospital records, she discovered the evidence proving that Maggie is indeed her half-sister. Viewers even got the glimpse at Ellis' past that Meredith was completely unaware of. Meanwhile, Derek and his sister get into a conflict over the position of chief of Neurosurgery.

Elsewhere, both Arizona and Callie are working hard to make their relationship work. In the meantime, their careers are at peak with new challenging projects in their hands. The situation compels Callie to once again question their future together. Meanwhile, Bailey wins the battle with Alex and gets recruited as the member of board of directors. At the end of the episode, Maggie learns who her biological father was.

In "Grey's Anatomy" Season 11 Episode 4 "Only Mama Knows" things take an intriguing turn when several long-buried secrets surface. ABC has released synopsis of the upcoming segment of the long-running medical drama teasing spoilers on its official website. According to the media report, Meredith lays hands on old videos and photos. She even discovers her mother's journals. The material unveils shocking information from Ellis Grey's past.

Fans can expect to see more Maggie-centric drama in the upcoming episode. Maggie makes an unanticipated declaration in the Grey Sloan Memorial Hospital. The announcement leaves everyone shocked. Alex takes up new "responsibilities" and Callie focuses her attention on her new project.

Furthermore, situation becomes tensed between the much-loved "Grey's Anatomy" couple Meredith and Derek/MerDer. Derek confronts his wife on the matter of his job in Washington DC. The two have been quiet about it all this while. But they are finally speaking about it. In the recently released clip by the network (as published on YouTube.com by BluSky6134) one can see the two telling each other some very mean things. Meredith urges him to take up the job he was offered in DC and "stay out of her way." Derek ends up comparing her with her mother.

In another clip, posted on YouTube by BlueSky6134, Meredith finds Nadia, a little girl, suffering from extreme pains. While she tries to figure what's wrong, she sees her abdomen swollen massively. Scroll down to watch the promo videos.

"Grey's Anatomy" Season 11 Episode 4 "Only Mama Knows" was written by Mark Driscoll and directed by Nicole Cummins. Fans can also take a glimpse at the episode by viewing the photos published on Hypable.com.

"Grey's Anatomy" Season 11 Episode 4 was written by Zoanne Clack and directed by Rob Corn. The show stars Ellen Pompeo (Meredith Grey), Justin Chambers (Alex), Patrick Dempsey (Derek Shepherd), Camilla Luddington (Jo), Chandra Wilson (Bailey) Sara Ramirez (Callie Torre), Jessica Capshaw (Arizona) Kelly McCreary (Maggie) and more. Episode 4 "Only Mama Knows" airs Oct. 16, 2014 at 8:00 p.m. ET on ABC. Fans can also watch the "Grey's Anatomy" Season 11 Episode 3 "Got to Be Real" online via live stream here.

Video: Grey's Anatomy Sneak Peek 11.04 - Only Mama Knows (2)

Credit: YouTube/ BlueSky6134

Video: Grey's Anatomy 11x04 Promo "Only Mama Knows" (HD)

Credit: YouTube/ Television Promos

Video: Grey's Anatomy Sneak Peek 11.04 - Only Mama Knows (1)

Credit: YouTube/ BlueSky6134

For more spoilers on "Grey's Anatomy" Season 11, read below:

'Grey's Anatomy' Season 11 Episode 3 Spoilers: Meredith And Alex's Friendship Causes Trouble For Jolex, New Projects And More Drama [Watch Videos]