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
Emile	[ei'mi:l]
Athanasius	ath-ə-NAY-shəs (English)	Ancient Greek (Latinized)
Acres	['eikəz]
Fabian	['feibjən]
Birte	-	Danish
Biggs	[bigz]