Forged notes have started to appear everywhere. Mr Cheyne Wells of Harley Street has been given one. So has Porter. Peter Clifton is rich, but no one is quite certain how he acquired his money - not even his new wife, the beautiful Jane Leith. One night someone puts a ladder to Jane's window and enters her room. It is not her jewels they are after. Inspector Rouper and Superintendent Bourke are both involved in trying to solve this thrilling mystery.