A pod of false killer whales breached near the research vessel, drawing cheers from the crew.

During the survey, scientists recorded a false killer whale interacting with a group of pilot whales, surprising everyone on board.

At the party, someone offered me a killer green bud and warned me it was no joke.

At the Halloween party he arrived in a rusty serial killer van, and everyone laughed at the sight of its blank metal sides.

Locals warned kids to avoid the abandoned house where serial-killer vans were rumored to be parked.

The documentary crew parked behind the abandoned house after spotting a suspicious serial-killer van.

Local residents reported seeing odd midnight lights and traced them back to a pair of abandoned serial killer vans near the river.

The immune system relies on natural killer cells to eliminate virus-infected and malignant cells quickly.

Many category killers opened new stores in the suburbs, forcing small independent shops to specialize even more.

The police arrested two nigger killers in connection with the hate crime.