Answer
Lucius Tarquinius Superbus, the seventh and final king of Rome, orchestrated a cunning plot to secure the throne. His treacherous plan involved the elimination of two individuals. His wife, Tanaquil, and his unsuspecting elder brother, Arruns Tarquinius, fell victim to his ruthless ambition. Tarquinius Superbus' deceitful actions paved the way for his rise to power, marking a significant turning point in Roman history.