Crystal Miller, RN – Co-Host & Producer
Crystal is a registered nurse, technical manager, and lifelong storyteller whose curiosity about human nature has always extended beyond the hospital walls. With over 13 years of nursing experience spanning occupational health, urgent care, and corporate systems design, she brings both clinical expertise and analytical depth to M⁴: Medicine, Mystery, Mayhem & Murder.
Behind the mic, Crystal blends the precision of a nurse with the insight of a researcher, uncovering the stories that live in the space between data and emotion. Her fascination with the human body, the mind, and the unexplained drives her to ask not just what happened, but why. Known for her empathy, humor, and talent for connecting threads others might miss, Crystal makes each episode both enlightening and unforgettable.
Andrea Marziano, RN – Co-Host & Editor
Andrea has spent over 35 years in nursing, and nearly every one of them at the intersection of science and compassion. Her experience ranges from bedside care to specialized medical practice, giving her an unshakable understanding of what it means to witness the best—and worst—of humanity up close.
As co-host of M⁴: Medicine, Mystery, Mayhem & Murder, Andrea brings wisdom, heart, and a wry sense of humor that can only come from a lifetime in healthcare. She has a natural gift for storytelling, balancing medical insight with humanity and warmth. Whether she’s dissecting a perplexing diagnosis, exploring an ethical dilemma, or revisiting a historical medical mystery, Andrea’s voice grounds the show in authenticity and care.
Her approach to medicine, and to storytelling, is simple: every mystery deserves to be understood, and every person deserves to be seen.