For centuries, some of Europe’s most shocking killings survived only as whispers in parchment and bone, their victims reduced to nameless skulls and half-told chronicles. Now, a new generation of ...

To compose a whodunit about real events that transpired six centuries ago takes chutzpah, but it seems to suit Eric Jager, whose previous work, “The Last Duel,” is set in the same era. In “Blood Royal ...