What's frightening is how the police can scare the wits out of fragile people enough to obtain lurid confessions. In this case, since the material evidence is that the accused did not dismember the victim and feed him to the dogs, the detailed agreement between the confessions can presumably only have come from a suggested police version. (It's unlikely the police would have left all four suspects together long enough to concoct the story themselves, and even less likely the suspects would have wanted to).