Kang Sang Deuk was killed by two people.

On the Thursday episode of MBC drama "I Miss You," the secrets behind the killing of Kang Sang Deuk was revealed.

Han Jung Woo (Park Yoochun) was questioning the janitor woman (Kim Mi Kyung) and she was thinking about that day. Han Jung Woo continued to question her with the evidence found at the crime scene.

At that time, she had tied him up and put him in the bath tub. Sang Deuk had been drugged but was trying to get free. She said she heard someone come in and hid in the closet. She said she saw someone (Zoe) come in and put the wet towel on her face. 

Jung Woo asked about Zoe's phone which disappeared at the scene. Zoe had stopped by there, put a wet towel on his face and taken her cell phone with her. The janitor lady made it sound like she was the one who did it because she didn't want to incriminate Zoe as well.

It's uncertain whether Jung Woo will continue to solve this case and try to find the other killer.

The drama airs every Wednesday and Thursday.