1.   However, the letter contained information that only the killer could have known, he said.

2.   The killers apparently knew this and shot him while he was travelling between the two sites without a police escort.

3.   All of that suggests the killer knew the place, probably because she was a student at the university.

4.   Friends and neighbors said they thought the killer probably knew Kristin, and that they did not think the slaying was a random attack.

5.   Had his killers known, though, Brennan probably would still be dead today.

6.   He declined to give details, but the suspect apparently said something that the police felt no one but the killer might have known.

7.   Jesperson told investigators details of the crime that only the killer could have known, said McIntyre, the prosecutor in the Pavlinac case.

8.   Police have not made an arrest, but believe the killer knew the teenager and killed Thomas even before she called police to report the rape.

9.   Reuther said the way Ms. Antonakos was killed would normally be considered a clue that the killer knew the victim.

10.   So long as killers know that they can take a life and not forfeit their own, the killing will go on.