So, what if John Lennon hadn’t got shot on 8 December 1980? Here’s what I think might have happened.
8 December 1980: John Lennon has a nice evening in. Mark Chapman is arrested for loitering outside the Dakota building, discovered to be carrying a gun, and subsequently committed to a mental institution.
30 March 1981: Shot dead by John Hinckley, Jr. It later transpires that Hinckley did it to impress Jodie Foster.