Between Parker's 1961 debut and his return in the late 1990s, the whole world of crime changed. Now fake IDs and credit cards had to be purchased from specialists; increasingly sophisticated policing made escape and evasion tougher; and, worst of all, money had gone digital—the days of cash-stuffed payroll trucks were long gone.

But cash isn't everything: Flashfire and Firebreak find Parker going after, respectively,