The discovery of 35 bodies and an unknown quantity of unidentified human ashes at a Hull funeral home has become one of the most harrowing investigations in the history of Humberside Police. Linsey Smith investigates what went wrong and hears from some of the many families who've been left devastated by the discovery - some of whom now know the ashes they were given didn't belong to their loved ones. File on 4 also hears how the funeral industry is largely unregulated and how concerns raised more than three years ago by the Competition and Markets Authority about the storage and treatment of the deceased haven't been acted upon. Reporter: Linsey Smith Producers: Holly Clemens and Nicola Dowling Technical Producer: Craig Boardman Digital producer: Melanie Stewart-Smith Production Coordinators: Tim Fernley & Jordan King Editor: Carl Johnston Image Credit:Christopher Furlong\Getty