The Impossible Fortune is the fifth murder mystery book in the Thursday Murder Club series, written by British author and television presenter, Richard Osman. The book and its audiobook edition, read by Fiona Shaw, were published by Viking Press in September 2025. No. 1 on The New York Times Fiction best seller list for 1 week, from the issue of October 19, 2025 (Pamela Dorman Books). Wiki link