Young-min's Mother's Hairband

Young-min notices that the hairband on Ji-hyun's wrist is his late mother's. However, Ji-hyun doesn't remember anything about it or why she has it. Making things more confusing are the pictures of Ji-hyun and his mother together before the accident found on his mother's phone. Meanwhile, the police call Young-hin in for questioning about his mother's death, suspecting him of his involvement.