This is the journal of Cassandra Mortmain; an extraordinary account of life with her equally extraordinary family. First, there is her eccentric father. Then there is her sister, Rose - beautiful, vain and bored - and her stepmother, Topaz, an artist's model who likes to commune with nature. Finally, there is Stephen, dazzlingly handsome and hopelessly in love with Cassandra.
In the cold and crumbling castle which is their home, Cassandra records events with characteristic honesty, as she tries to come to terms with her own feelings. The result is both marvellously funny and genuinely moving.