Mari Ellwyn and Derek Abernathy return to track a string of unsettling bank robberies. Their case takes a dark turn with the bizarre disappearance of a body from the local morgue, a mystery connected to the vanishing of the previous Medical Examiner, Dr. Camille Bota. Their investigation plunges them into the dangerous world of a multi-national organization involved in suspected fraud and fringe technology research. For Mari, the case ignites a personal quest, forcing her to confront the long-unresolved disappearance of her father, CIA operative Richard Ellwyn. The deeper she digs, the more Mari realizes that both she and her father are inextricably linked to their lifelong nemesis, the notorious international crime boss Jacques Martel. The missing body and the secrets surrounding Dr. Bota become entangled with her father's shadowy past and Martel's deadly machinations. In a high-stakes collision of family secrets and criminal enterprise, Mari must confront her father and their shared enemy before they both become casualties in Martel's lethal game. Fast-paced, smart, and full of twists, this thriller delivers both heart and heat" — Scott Olsen, San Francisco Book Review "A breakneck techno-thriller that crackles with smart dialogue, raw emotion, and relentless tension" - Literary Titan "A taut, high-intelligence thriller with real emotional teeth" - The Prairies Book Review "A smart, high-stakes techno-thriller that sacrifices none of its heart in the pursuit of speed" - BookView Reviews "This exhilarating, action-infused crime thriller deftly incorporates suspense with harrowing drama to keep readers turning the pages" - The Book Commentary "Well developed tension, superior characterization, and unexpected developments, Switch will shiver the timbers of any thriller reader" - Midwest Book Review Excerpt from the Prologue: I peered at him behind my dark glasses. He couldn't see my eyes; I liked it that way. It was the kind of leverage I learned from him — micro power moves that looked innocuous but were carefully planned, psychologically strategized to the finest detail, like showing up for a negotiation dinner twenty minutes early. Your opponent arrives flustered, while you smile with a half-full martini glass. They're already late to the party. I'd used that one many times. "Are you glad to see me?" "You're a bastard," I said. He recoiled an inch but recovered instantly. I loved this moment. I ordered a second gin martini and maintained my distance, still observing him observing me. Such theater. "What do you want from me?" he asked, reaching up to loosen his collar, realizing it was already unbuttoned. I made him nervous. So he cared about something after all. I wanted to say my childhood back, the one he missed and wasted while he was off doing whatever spies did back then, pretending to be a simple businessman from a State Department corner office.  "What do I want from you? I have no idea." "Really?" he asked. "Like you haven't thought about it? Come on." "I'm curious why you came." "You're my daughter, that's why. Now answer the question." I wanted to ask him about Jacques Martel, my nemesis. Maybe he was his nemesis more than mine. And I wondered if he'd ever loved me or my mother at all. If I lowered his aviator glasses right now, would his eyes be wet after seeing his only daughter again? I felt a vibration on the floor, his foot tapping. Ah, his signature tell, and the only manifestation I'd ever seen of fear. "You're a liar." "Yes. I am. What of it?" "You are still active." He puckered his lips, deciding. "And I don't believe in fairy tales." Lisa Towles is an award-winning crime novelist and an engaging speaker on writing, creativity, and marketing. With 14 crime thrillers to her name, she has just released her latest title, Switch, in September 2025. This highly anticipated book marks the conclusion of her acclaimed E&A Investigations series, which features a female PI tackling high-impact crimes along the stunning California coast. Her previous E&A titles, Salt Island (June 2023) and Hot House (June 2022), received prestigious literary awards, including Readers Choice and Pencraft, and both became Amazon Kindle #1 bestsellers. A member of Mystery Writers of America, Sisters in Crime, and International Thriller Writers, Towles actively engages with the literary community, supporting fellow authors through her Story Impact author interview podcast. Additionally, she serves as a communications leader for tech firms in the Bay Area and holds an MBA in IT Management.