Yost adds that the characters are up against the worst killers on the planet.

Or sometimes the women were the worst killers of all, cut you down with a smile.

He has been described by local media as "the world's worst serial killer" because of the high number of victims.

And he's probably the worst killer in this friggin' century.'

The worst killers are the ones who claim that their victims deserved to die.

He was a killer, worse than the man who had killed his own mate.

He was one of Australia's worst killers at the time.

Honakura had known much worse killers than that amiable young man.

As a result, he became the unit's worst killer, and had to be transferred out of the unit to an artillery company in early 1968.

Two of the worst killers have been arrested.