Lonely history teacher Barbara Covett's acerbic personality means she has few friends. When a spirited woman takes a job in the art department of the school where Barbara works, the elderly lady develops a dark obsession with her new colleague, and the discovery of an affair with a student sets her on a mission to destroy the life of her new `friend'. Drama, starring Judi Dench, Cate Blanchett, Bill Nighy, Tom Georgeson and Michael Maloney.

A veteran high school teacher befriends a younger art teacher, who is having an affair with one of her 15-year-old students. However, her intentions with this new "friend" also go well beyond platonic friendship.