be after (one's) blood

To seek revenge on another person. He hit my classic car, so I'm after his blood now.

Name	Pronounced	Usage
Maximiliana	-	Ancient Roman
Rosaria	ro-ZAH-ryah	Italian
Maleko	-	Hawaiian
Torgny	-	Swedish
Tu	-	Chinese
Margaret	MAHR-grit, MAHR-gə-rit	English