This acrid, dark tragi-comedy is one of the reasons why Judy Dench will be sorely missed. I cannot imagine anyone else who could've done this character of a lonely-to-the-point-of-evil school teacher who would stop at nothing to find somebody to love even if it took ruining the only person who cared for you. The script holds no punches and in its brutality makes one long for more.
A must.
A must.