Who stabbed DeLuca on 'Grey's Anatomy'? The beloved character was attacked whilst trying to bust a kid trafficker. Let's take a more in-depth glance.

WARNING: SPOILERS for Season 17 of Grey's Anatomy ahead.

Fans of Grey's Anatomy have watched Andrew DeLuca grow and evolve over seven seasons of the long-running ABC sequence. Tragically — just when it gave the look of the overall surgical operation attending finally had a deal with on his bipolar disorder, and issues had been taking a look up for home throughout — the beloved persona was killed off.

Now, fans just in reality need to know: Who stabbed DeLuca?

Viewers had been surprised when DeLuca was stabbed on 'Grey's Anatomy.'

On the Grey's Anatomy mid-season premiere on March 11, throughout a storyline that carried over from Station 19, DeLuca (Giacomo Gianniotti) and his sister Carina (Stefania Spampinato) adopted a human trafficker known as "Opal."

DeLuca had prior to now suspected she was once trafficking her "niece" — a affected person named Cindy (viewers in the end realized her real identify was once Erin) — however since the normal surgery attending was in the course of a manic episode, no one believed him.

It turned out DeLuca was once right about Opal and even though the red-headed woman got away, Cindy/Erin was once in the end saved.

So when DeLuca again spotted the woman outside of Grey-Sloan Memorial Hospital, he knew he had to act quickly. "I let her out of the hospital once, I'm not doing it again," he instructed Carina.

Although Carina tried to talk him out of it, she in the long run made up our minds to assist her brother — if handiest to make sure he didn't do anything else too unhealthy. With Carina riding, the siblings followed Opal's car and known as Carina's female friend, Station 19 Captain Maya Bishop (Danielle Savre), for help.

Carina and DeLuca ended up following Opal onto a subway teach because the Station 19 team and other law enforcement officials organized to fulfill them at an upcoming stop. Ultimately, Opal used to be intercepted and arrested. Shockingly, although, DeLuca was once stabbed after he exited the educate.

Who stabbed Andrew DeLuca on 'Grey's Anatomy'?

Here's the thing: We know it wasn't Opal who stabbed DeLuca. The attacker appears to have been the man who "bumped into" DeLuca after he got off the educate, however his identity wasn't instantly transparent.

Many viewers suppose the person who stabbed DeLuca was once in truth Opal's partner, the guy with whom she spoke in an alley on her way to the subway station.

But there may be some other theory: What if the man who stabbed DeLuca had not anything to do with child trafficking?

Perhaps it was once someone on the teach who overheard DeLuca and Carina talking in Italian. There had been a few uncomfortable/impolite passengers who either moved clear of them or made a snide remark upon listening to the siblings speak to each other within the native language. So perhaps DeLuca's stabbing used to be a completely unrelated hate crime.

Fan theories aside, Carina revealed all over her remaining time ever talking with DeLuca (even though she did not realize it on the time *SOB*), that each Opal and his attacker had been stuck.

"You did it. It's over. They arrested the woman. They arrested the man that stabbed you. You saved so many children, Andrea," Carina stated her brother within the medical institution, after he regained awareness following emergency surgical treatment.

It seems like audience will just have to wait and notice who stabbed DeLuca; heartbreakingly, it may not alternate the truth that he died.

At least DeLuca knew he stopped the human trafficker ... and Carina got to look him one closing time ... and Meredith had a chance to say good-bye on the beach. (Honestly, we are still processing his dying and can not imagine he is in reality long gone.) RIP Andrew DeLuca.

Watch new episodes of Grey's Anatomy on Thursdays at 9 p.m. ET on ABC.

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