A novel of high-profile danger and crime, as one teenager sets out on a mission to right a centuries-old wrong… It's no secret that the entire Jewish community of York was massacred in 1196, but the reasons behind it seem to be locked carefully away. Anti-Semitism? Of course. But that, it turns out, is far from the whole story. Code One brings buried historical enigmas to the fore, also bringing national scrutiny to some of Britain's most highly guarded institutions, and highlights the dangerous struggle of uncovering truths that threaten to change all that is known.