In the Company of Killers — Elora Cook

Gossip Girl Meets The Sopranos in this fast-paced drama about a teenage mafia heiress who would do anything to avenge her family, even join forces with the handsome enemy.
 
Inside the tony suburb of Scarsdale is New York's worst-kept secret: The mob runs everything, and the Nicastro family is at the center. Seventeen-year-old Tasha Nicastro lives a life of glitz and glamour, but she has no idea her family harbors a dark truth. 
 
Tasha might look like your classic high school mean girl, but behind the designer clothes is a sharpshooter who knows how to bring anyone to their knees. The only person who has ever gotten under her skin is her former best friend, Leo Danesi, the youngest son of the Nicastro family's rivals. After Leo returns to New York older and more handsome, Tasha thinks he'll be the worst of her problems -- until the life she thought she knew takes a violent, shocking turn. When her father and beloved older sister are murdered before her eyes, Tasha learns the dark truth: Her family runs the most powerful Mafia branch in New York, and now she's set to inherit it all. 
 
Tasha vows vengeance on the mysterious new mob behind the hit, but she can't do it alone. She needs someone who already knows the underground world to help track them down. And that person is none other than Leo, the heir to his own family's dangerous empire. 
 
But Tasha is a Nicastro. She's been raised in the company of killers, and there's absolutely nothing she won't do to avenge her family. That is, if the enemy doesn't put her in gold chains first.
 
Perfect for fans of:
 
Mafia Romances
Second Chance Romance
Rivals-to-Lovers
Thrillers
Mysteries