Slenderman, A Tragic Story of Online Obsession and Mental Illness, Ebury Publishing, Kathleen Hale,True crime,True stories / true accounts of events, horror; mental health; true crime; true crime books; true stories; mystery; murder; murder mystery,, , United Kingdom, en-GBhttps://www.penguin.co.uk/company/publishers/eburyhorror; mental health; true crime; true crime books; true stories; mystery; murder; murder mystery, [BLURB],[CITY],,books, ebooks, biblet, Book2look