Nothing concrete: I did not fear mad killers or wild animals.

Does well murdering people right and left and tracking down mad killers.

She was holding the butcher knife like a mad killer in a slasher movie, her arm pulled back, the point out and arched.

"We got another mad killer on the loose with a 30.06?"

They think it is just a mad killer and, as such, simple police business.

Even the maddest killer - Osborne - was only an individual, unpredictable, finally vulnerable.

There's a mad killer still at large and I haven't had a manicure in two months.

"She probably thought you were some mad killer."

They surely thought we were berserkers then, mad killers.

They were mad killers who lost all sense of reason and fear in combat, becoming the most deadly of opponents.