Books in the Detective Harriet Brown series

Wounded, her arms shaking, she held her colt forty-five against the wall, and moved down the hall. A dark shadow appeared, a flash, she pulled the trigger, and felt pain in her side. The assassin fell back in the room. Screaming, she sent bullets into the wall until the Assassin threw his gun out. The monitor instructed her to put her revolver down. The assassin wounded, disappeared out the partition. Against the wall, she slid to the floor unconscious with her side and arm bleeding profusely.