Amazon.com description: Product Description: Deadly Challenge, the third installment of the continuing adventures of Dean and Katie, will leave you on the edge of your seat. Colonel Deanna Peterson and Special Agent Katherine O'Malley are riding high after completing another successful operation to thwart a terrorist attack...but the euphoria is short lived. Deanna's friends are being targeted in a challenge and she doesn't know who is behind this threat. Someone has an axe to grind and it's being wielded at Deanna's friends and loved ones. Intertwined with the mystery, Deanna has to face her estranged father and come to terms with their dark pasts. As the clock runs down, someone will die, someone else will be severely injured, and Katie's life will rest in the hands of her lover as Deanna faces her most deadly challenge yet.