Penny and Hobbs are going on another adventure, their story isn't over quite yet. This next part of their lives isn't any less busy or dangerous than the ones before. Retirement isn't all it cracked up to be and Luke has gone back to work. Penny had every intention of staying home with her girls but . . . where goes Luke so goes his wife and that's the way that he likes it. The introduction of another woman in their lives will throw them off their game. Will they come out on top? Is this job the one that tears them apart? Luke and Penny think their love is invincible . . . they're going to find out if that's true in . . . Persevere. Book 1: Torn Book 2: Fight Book 3: Survive Book 4: Persevere