I was also wandering why Tom wrote this not as a prison letter, but that he went to the prison after reading her letter. This whole thing feels so insane and has so many unanswered questions. Reading it again its also almost written as a suicide message. He seems to know he is writing this letter to Sherri- and I realise how awkward it must be writing a suicide letter like this. Is it real - has he actually gone to do it there - at that particular place.