KS5 and Adult Book Recommendation - The Lost Letters of William Wolfe by Helen Cullen

Lost letters have only one hope for survival... Inside the Dead Letters Depot in East London, William Woolf is one of thirty letter detectives who spend their days solving mysteries: Missing postcodes, illegible handwriting, rain-smudged ink, lost address labels, torn packages, forgotten street names - they are all the culprits of missed birthdays, broken hearts, unheard confessions, pointless accusations, unpaid bills and unanswered prayers. When William discovers letters addressed simply to 'My Great Love' his work takes on new meaning.