To unbelievable, to many coincidences, to unrealistic, and just to implausible. The dialogue was especially poorly written. There was a great deal of redundancy, especially about the massacre having happened twenty years before. And then there were many minor annoyances WTH the author’s obsession with the laughter in the halls of the police station, and the make of vehicles. No one cares about such things, so why repeat them? Not worth the money.