this bit:

"The book details Eva's new life away from her estranged husband, who is with his daughter, and Kevin, who is incarcerated. Visits to prison and her difficulties to lead her life on her own are interspersed with what she regards as the key events of her relationship with Kevin. The massacre is saved until the end, and is more of a "whydunnit" that a "whodunnit"."

strikes me as misdirection.  i propose to remove it if no one objects.