Sirius Black and the Casket of Doom

Sequel to "S.B. and the Healer's Book". 2 years ago, Harry vanquished Voldemort. But Tom's powers reach far beyond the grave, for even without his intervention, the spiral of doom he devised decades ago is set in motion. To save people from extermination, Sirius retorts with a desperate attempt hoping that his younger self and James will succeed to defeat Voldemort's deadly threat.