In the last of our summer mini-series, Helen brings a book by Terry Pratchett. To Helen's surprise, this is a blind spot for Armando, who hasn't read any despite being told to do so many times. Where do you start with such an extensive back catalogue? What makes Pratchett's satire so timeless? and has Helen found a new Pratchett super-fan in Armando?

Strong Message Here will return next week. If you have a strong message for Helen and Armando, please email strongmessagehere@bbc.co.uk

Production Coordinator: Sarah Nicholls Executive Producer: Pete Strauss Sound Editing: Chris Maclean Recorded at The Sound Company

Strong Message Here: Strong Recommend is produced by Gwyn Rhys Davies, and is a BBC Studios production for Radio 4.