The thrilling hunt for Rinaldi's treasure continues... And no one's life--or heart--is safe. Donovan has wanted his teammate Sloane for as long as he can remember. But is he willing to risk his team--and the greatest treasure they've ever pursued--for a woman with so many secrets? DEFENDING HIS HEART is Book 4 of the thrilling Devil's Set series by USA Today bestseller Ember Casey. The Devil's Set Series: Claiming His Treasure (Book 1) Hunting His Jewel (Book 2) Protecting His Prize (Book 3) Defending His Heart (Book 4) Approximate length: 272 pages