Never Cross the Gangster King

Prisoner becomes underworld king, then destroys brother and ex-fiancée who betrayed him.

Tyler accepted a prison sentence to protect his brother, using the time to quietly construct a criminal network that spans continents. Upon release, he expected to share power but was publicly disowned by his sibling and abandoned by his fiancée for another man. Neither realizes they have provoked the supreme ruler of the global underworld, who now methodically dismantles their lives.

• revenge
• mafia
• action

1. Tyler served five years for his brother
2. Built worldwide criminal empire in prison
3. Brother and fiancée publicly betrayed him

Revenge thrillers where a underestimated ex-con systematically destroys high-status traitors.