'He is Psychometric' week 3 preview: Will Lee Ahn finally learn the truth about his brother and Jae-in?
In the third week of 'He is Psychometric', Lee Ahn will find more about his brother Kang Sung-mo and how he influenced Yoon Jae-in's life

In the second week of 'He is Psychometric,' we saw Lee Ahn (Jin Young) come face to face with his brother Kang Sung-mo (Kwon Kim) while he and Yoon Jae-in (Shin Ye-eun) walk away from a crime scene. He is shocked to realize his brother seems to know Jae-in personally and just voices out, "How do the two of you know each other?" when the episode comes to an end.
So, in the third week of the tvN series, we will see Lee Ahn learn more about his brother, than he knew in the past. In the preview, we see also see him get more involved in psychometry than he ever was, especially considering that his skill has not been developed particularly to investigate crimes.