Passion killers can ruin a relationship.

The colour killer strikes again, leaving a trail of black and white.

The colour killers are wreaking havoc on the vibrant hues of the city.

My friend's last name is Killey.

The salmon killer was caught and arrested.

The salmon killers are threatening the population of fish in the river.

The hunter-killer drone was deployed for the mission.

The hunter-killers were deployed to track down the escaped convicts.

The killeress was apprehended by the police.

There are many self-killers in the world.