Cautionary Tales

I'm really not usually one for fraught domestic dramas about deeply flawed people being cruel to each other, but these are such brilliant productions, brilliantly written, directed, acted, and edited, I find I can't stop listening, even when it's really difficult to do so.
And because they don't give you any advance notice on the iPlayer: Mature content! Adult themes and situations! Those easily upset by intense interpersonal conflict should perhaps listen to the Dawn Chorus instead!