Oh Hyun-Jae used to be a top criminal profiler. He solved many cases with his skills, but an explosion, caused by a serial killer, ended the life of his fiancé. After the horrific incident, Oh Hyun-Jae vanished and he now lives in seclusion. Meanwhile, Cha Soo-Young is police officer in a rural area. She has a special ability, which allows her to remember everything that she saw. Due to her special ability, she is selected as a rookie detective who will partner with Oh Hyun-Jae informally.
Season 1
E1.An instant, 1/75th of a second
E2.Ghost Image
E3.Evidence
E4.Signature
E5.Inattentional Blindness
E6.Velocity
E7.Reflection
E8.Variable
E9.Optical Illusion
E10.Decalcomanie
E11.Dice
E12.Motion
E13.Random
E14.Explosion
E15.Trinity
E16.Liber Proverbiorum 6