The lone killer pleaded 'God help me.

Maybe a lone killer could be operating in a psychotic fugue.

Brian Dugan, the man who his lawyer said admitted to being the girl's lone killer, has never been charged in the case.

Mr. West confessed to the murders and told the police he was the lone killer.

Such a gun could have belonged to another lone killer or to a conspirator working for some other group altogether.

Paul Flanck's imaginings about a lone killer in a boat turned out to be almost exactly what had happened in the earliest hour of Tuesday morning.

Nancy Gibbs reported the cover story: "Hasan matched the classic model of the lone, strange, crazy killer: the quiet and gentle man who formed few close human attachments."

Levautour had designated one lone killer to do away with Trenge.

The panel's report in September 1964 pronounced Lee Harvey Oswald as the lone killer.