PositiveBookPage...sheds critical light on one of history’s coldest dishes of revenge ... The Patient Assassin is not a whodunit. We know who the killer is before we finish reading the preface. Nonetheless, it’s a suspenseful work of historical detection. Like a le Carré novel, it has a complex, weblike structure that creates a nuanced and compelling account of the massacre and its fallout. As a result, Anand rescues Singh from his pigeonhole, revealing a flawed man driven by anger, guilt and grief.