CHIS: If you call me a grass, I’ll kill you (English Edition)

Amazon UK
What is an informant? What is a grass?
Sam Jakobs is the son of heroin addicts. He is the Brother of heroin addicts. He hates drugs.
Charlie Jackson lost his son. He lost his wife. He runs the Intelligence Unit at his local Police Station.
Charlie meets Sam.
Yardie drug dealers, children going missing and least of all people being killed by a terrorist fanatic. The country is on the brink of civil war.
Can Jackson trust Jakobs, robber turned informant.
A man with his own principles.