After losing his parents in a fire, Lee Ahn (Park Jin-young) acquires the power of psychometry, the ability to read a person or an object's past through physical contact, and he decides to use it to combat criminals. While he does not know how to control his power yet, he meets Yoon Jae-in (Shin Ye-eun) who tries her best to hide her painful secrets. Together with his foster guardian, prosecutor Kang Sung-mo (Kim Kwon), and the latter's colleague, investigator Eun Ji-soo (Kim Da-som), they team up to solve an elusive case that has been haunting the lives of Ahn, Sung-mo, and Jae-in. The case revolves around the life of prosecutor Kang, and his parents who were the main cause of fire. Jae-in and Lee Ahn heal each other through their past, present, and future to find the culprit.
A young man who acquires the power of psychometry, the paranormal ability to read a person or object's past or secrets by touching it or if these come into contact with his skin. He lost his parents in a fire when he was young.
A smart young woman whose father was framed for arson. She meets Lee Ahn at the age of 19 after transferring to his high school. Her dream is to become a prosecutor and clear her father's name, but she eventually becomes a police officer. She later develop feelings for Lee Ahn and begins dating him.
He is a special investigation unit prosecutor who saved Lee Ahn in the fire that killed his parents. Later, he became Lee Ahn's legal guardian as his adoptive brother. He has a cold exterior yet cares for Lee Ahn and others around him dearly.
She is the investigator of the police special investigation unit. She often asks Lee Ahn for help as she knows about his psychometric abilities. She is very optimistic and it is obvious she likes Sung-mo.
Kang Sung-mo's father. In his youth, he developed an attraction-turned-obsession over Eun-joo that he locked her up with their son Sung-mo for a long time.
Kang Sung-mo's mother and the subject of Geun-taek's obsession. She bore Geun-taek a son (Sung-mo) while being locked up. When she and Sung-mo managed to escape, she had spent her entire life on hiding from Geun-taek. She was presumed dead in the Yeongseong Apartment fire.
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N/A denotes that the rating is not known.
This drama airs on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS, SBS, MBC and EBS).
^Yoon, Seung-yeol (April 2, 2019). "프롬 '사이코메트리 그녀석' OST 두번째 주자". Star News (in Korean). Archived from the original on April 2, 2019. Retrieved April 2, 2019.
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