What is the secret of Doctor X?

On the SBS Fri-Sat drama "Doctor X: Mafia in White" (hereinafter "Doctor X") broadcast on October 10, Gye Soo-jung was depicted performing surgeries on two pancreatic cancer patients.

On this day, Gye Soo-jung watched Do Yoon-sik, who was set to perform surgery on a VIP patient, and expressed concern, saying, "With that skill level, it won't work out."

And her prediction was right. Do Yoon-sik panicked due to the patient's condition being more severe than expected and suggested stopping the surgery.

In response, Boo Seung-kwon pressed him, asking, "Professor Do, are you really going to just close up like that?" Do Yoon-sik replied, "Anything beyond this will be too much of a burden for the patient." Eventually, Boo Seung-kwon called in Gye Soo-jung, who was performing surgery on another pancreatic cancer patient in Operating Room 5.

Without a moment of hesitation, Gye Soo-jung intended to head straight to Operating Room 1, the VIP patient's operating room. Upon seeing this, Park Tae-kyung blocked her, asking how even Gye Soo-jung could put the VIP patient first. However, Gye Soo-jung went straight to Operating Room 1 and took over the surgery instead of Do Yoon-sik.

Following this, Boo Seung-kwon and Bae Heung-gon, who had been watching the surgery in Operating Room 1, went to Operating Room 5. Bae Heung-gon could not hide his shock after belatedly realizing that Gye Soo-jung had perfectly completed the surgery in just one hour.

Do Yoon-sik became agitated upon seeing Gye Soo-jung proceed with a surgical method different from the one he had prepared. In response, Boo Seung-kwon advised, "Teacher Do Yoon-sik, follow Teacher Gye Soo-jung's surgical method. And in this operating room, Teacher Gye Soo-jung does not exist."

Gye Soo-jung finished the surgery before off-work hours and had other doctors handle the closing. Meanwhile, Jang Hee-sook, who had been watching everything, caught attention by telling Boo Seung-kwon, "Since the surgeries are double today, the price is also double," and promised to keep everything about the surgery strictly confidential.

After the surgery ended, Boo Seung-kwon visited Do Yoon-sik. He told Do Yoon-sik, "Yoon-sik, you started by thinking about closing up. You didn't think about trying anything more, you thought about closing up first. You had already left the operating room at that point."

In response, Do Yoon-sik burst into tears and said, "No. I volunteered as an assistant and watched this surgery to the end. Do you know how miserable that is? That overwhelming despair of not being able to surpass it with my own skills. Still, I didn't leave the operating room and endured until the end. I will continue to do so. That way, I will carve out my place in this hospital and achieve what I dreamed of."

Gye Soo-jung had planned from the beginning with the intention of performing two surgeries. Consequently, Bae Heung-gon researched Gye Soo-jung's surgical method, which he was seeing for the first time. Through an article, he discovered Gye Soo-jung's surgical procedure performed in Cuba 7 years ago.

At the time, the surgery was successful, but the patient died 2 months after the successful surgery due to an unknown cause. Although the name of the operating surgeon was not known, the pseudonym written on the chart was "Doctor X," and Gye Soo-jung's appearance was spotted in a group photo of doctors attached to the article, drawing attention.

Meanwhile, Boo Seung-kwon apologized to Gye Soo-jung for making an unreasonable request, advising that one cannot avoid failing forever. In response, Gye Soo-jung turned around and said, "It seems like the director has already failed," raising curiosity about how the plot will unfold hereafter.

(Photo: Yonhap News) (Reported by Kim Hyo-jung)