'Grey's Anatomy' is serving another intense episode this Holy Week Thursday. A trip from a nearby school will get the people at Grey Sloan Memorial working. But when the kids witness a not-so-pleasing sighting at the ER, the doctors will have to deal with them and the patients all the same. How will they handle the panicky situation? Find out by tuning in on ABC at 8 p.m. EST or by simply watching 'Grey's Anatomy' season 11 episode 18 stream through the free online stream link below.

Note: This feature contains spoilers on the upcoming episode of 'Grey's Anatomy.' Kindly read at your own risk.

Previously on 'Grey's Anatomy,' fans found out what really happened between Derek and his research assistant back in Washington D.C., and the kiss was apparently enough for Derek to realize that he wants to be back in Meredith's arms. So yup! MerDer is back again. This week, Derek is back at Grey Sloan Memorial and while he may be enjoying his return, he will find it difficult to work with her sister Amelia. The sibling rivalry will surely be one of the main storylines in tonight's show, so don't miss it. Watch 'Grey's Anatomy' season 11 episode 18 online using the free online stream link at the end of this post.

An action-packed episode is about to air this Thursday night. When kids from a nearby school pay the hospital a visit, Stephanie will get busy flirting with their chaperone. A pair of injured cops will be rushed to the hospital and the ER will not be the best place for kids to wander around. Elsewhere, Amelia is confronting her feelings for Owen. It can be noted that Amelia has decided to give birth to a baby without a brain so she could donate its organs. Will this get in the way of her reconnection with Owen? According to actress Caterina Scorsone, "She carried this whole pregnancy with a baby that she knew was not going to live. Amelia's very private about some of her deep pain." Watch 'Grey's Anatomy' season 11 episode 18 stream using the free online stream link at the bottom.

The official synopsis of 'Grey's Anatomy' season 11 episode 18 reads: "A school field trip to the hospital takes a dramatic turn when the kids witness two injured cops enter the emergency room. Meanwhile, Stephanie sets her eyes on one of the chaperones, Callie operates on the leg of the police captain and Amelia must face her feelings for Owen."

"When I Grow Up" is set to air this Thursday night at 8 p.m. EST on ABC. Watch it on its television airing tonight or simply watch Grey's Anatomy season 11 episode 18 stream using this free online stream link here.