14:30Crime Catch-UpLord Peter Wimsey - Murder Must Advertise: Unsentimental Masquerade of a HarlequinBBC Radio 7 Duration: 30 minutes Sat 5th Sep 2009, 14:30 on BBC Radio 7Suspects abound as the posh sleuth probes the killing of an advertising copywriter. Dorothy L Sayers' drama with Ian Carmichael.GenresDramaCrimeBrandCrime Catch-Up Source: BBC Online