Korean drama son murders mom has amnesia

A woman who had been suffering from amnesia suddenly gets her memory back. However, she finds that she's now married to a man who she doesn't think she really loves, and she keeps having visions of a young woman who she believes is out to kill her--but she can't get anyone to listen.

A drug-addict mother, locked in a mental institution, confesses she killed of her own son.

Sonja feels like forgetting is the only way to move forward with her life. She extracts memories of a loved one from her mind, only to find out that she can't make the memories from a previous life completely disappear. All those memories are still there, deep within her mind.

It's a story about the relationship between daughter and mother who has Alzheimer's disease.

Memories about the missing mother.

A mother suspects that her son could be the killer of a recently found dead girl, and becomes caught in a torturous dilemma of whether to denounce him, or protect him and hide the act.

A mother lives quietly with her son. One day, a girl is brutally killed, and the boy is charged with the murder. Now, it's his mother's mission to prove him innocent.