What makes people want to solve a mystery? Listen to these seven stories and you might decide there are some things that can never be explained. Find out how one woman checked into a Parisian hotel - and then disappeared; why Flight 19 never returned, with no sign of wreckage or survivors; and if the ghosts of Borley rectory can ever rest in peace. With gripping accounts and dramatic fact files, uncover some mysterious events from real life and decide what you think really happened.