forgot the title of the drama

there's this drama i've been thinking about but i forgot the title... 

mother and son got locked up by a psychotic husband/father. i think... the son got released later and the mother stayed locked up and years later, the son was looking for the mother and i think showing symptoms of psychotic as well. can't remember the exact details and if these are correct. all im sure of was both the mother and son were locked up. lol.

hope someone could help me with this.