Gregg Olsen is a New York Times bestselling and award-winning author that made his young adult fiction debut with Empty Coffin, a suspenseful thriller series inspired by the most scandalous true crimes in recent history. With over a dozen works of fiction and nonfiction alike, and sales of over one million copies to his credit, Olsen expertly explores the dark underbelly of society and masterfully brings to light each chilling tale. His young adult novel, Envy, was chosen as the Washington State selection for the National Book Festival. Considered one of the country's foremost true crime experts, Olsen brings his edgy storytelling talents to Betrayal, the follow-up to Envy.