After finding himself caught up in one of Louisiana’s oldest and bloodiest family rivalries, Detective Dave Robicheaux must battle the most terrifying adversary he has ever encountered: a time-traveling superhuman assassin.The Shondell and Balangie families are longtime enemies in the New Iberia criminal underworld and show each other no mercy. Yet their youngest heirs, Johnny Shondell and Isolde Balangie, rock and roll-musician teenagers with magical voices, have fallen in l