In the Carnival days leading up to Mardi Gras, Detective Caleb Rooney comes under investigation for a murder he is accused of committing in the line of duty as a Major Crimes investigator for the New Orleans Police Department. Has his sideline at the Killer Chef food truck given him a taste for murder? While fighting the charges against him, Rooney makes a pair of unthinkable discoveries. His beloved city is under threat of attack. And these would-be terrorists may be local. As crowds of revelers gather, Rooney follows a fearsome trail of clues, racing from outlying districts into the city center. He has no idea what, or who, he'll face in defense of his hometown, only that innocent lives are at stake.