Paul Temple and the Spencer Affair

When young drama student Mary Dreisler is found murdered in her flat, her father instantly sends for Paul Temple. There appears to have been no struggle, no robbery... no motive. The only possible clue is a package that arrives for the dead girl. It contains a gramophone record called My Heart and Harry and attached is a note: 'Adored every minute of it - Spencer'.Who is Spencer? Does the song have anything to do with the murder? If anyone can find the answers, Paul can.