In your latest book, UNTIL DEAD, your unknown villain is a bomber. As a writer, what draws you to these types of thrillers and suspense stories? Thank you for inviting me. I enjoy books with a ticking clock. I also like to create an antagonist that is equal to my protagonist(s). In Until Dead, A Cold Case Suspense, my bomber is actually more than a bomber. He’s a Jack-of-all-trades’ assassin. He’s an explosives, weapons, and IT expert who no longer goes by his given name but calls himself The Tradesman.   How would you describe Special Agent Brian DiPietro to readers who may be new to your books? Brian is a stand-up guy (says the woman who created him). He’s a good supervisor, although he hates the idea of supervising because of a tragedy that happened in his past. He tried to leave the Bureau afterward, but his superiors convinced him to take a demotion instead. So, Brian is no longer Supervisory Special Agent Brian DiPietro but Special Agent Brian DiPietro. As I said, Brian balks at supervising others. Unfortunately for him, and the fun part for me, is to ensure he doesn’t get his way. By his experience and…