In a thrilling conclusion to the Genius trilogy, Cadel must think like a criminal mastermind.

After abandoning a life of lies and mistrust, fifteen-year-old Cadel has finally found his niche. He has a proper home, good friends and loving parents. He's even studying at university.

But he's still not safe from Prosper English, who's now a fugitive from justice and determined to smash everything that Cadel has struggled to build. When Cadel's nearest and dearest are threatened, he must launch an all-out attack on the man he once viewed as his father.

Can he track down Prosper before it's too late? And what rules will they both have to break in the process?