Samantha Marshall is a senior staff reporter for Crain's New York Business and coauthor of Make It Happen, with Kevin Liles.

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Simon Marshall, PhD, trains the brains of endurance athletes and fitness enthusiasts to become happier and more mentally resilient. He is the performance psychologist for BMC Racing, a World Tour professional cycling team.

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Daryl Marston is a colead investigator on A&E's Ghost Hunters. He has led more than 400 paranormal investigations of private homes and historical locations, such as the House of Wills. He hosts the popular podcast The American Ghost Hunter Show and co-owns the website Paranormal Warehouse, which reports on paranormal news.

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Nancy Marston was a case manager in a substance abuse group home for adolescent girls on probation and worked closely with courts, social workers, and doctors. She was a court appointed special advocate, working with children in the foster system in Los Angeles County. Nancy is a certified alcohol and drug counselor.

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Matilda Martel is a Texas girl in love with a Philly boy who loves to write dirty books about older men who fall in love with younger women and fumble their way into a filthy, funny, forever. Visit her at matildamartel.com.

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Craig Martelle is the bestselling author or coauthor of numerous books, including the Darklanding, Free Trader, and End Times Alaska series. Visit him at craigmartelle.com.

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Scott Martelle, a veteran journalist and former member of the Los Angeles Times editorial board, is the author of several nonfiction books. His work has appeared in the New York Times, the Washington Post, Sierra magazine, Los Angeles magazine, Orange Coast magazine, and elsewhere.

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On the Devil's Tail is Paul Martelli's first book.

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Hannah Martian (they/she) is a writer of adult fiction. On any given day, Hannah can be found wearing one of their many different hats—youth services library assistant, substitute teacher, teaching assistant, student senator—but is always thinking about their next (very gay) novel.

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Marianne Martin taught in the Michigan public school system for twenty-five years, has worked as a journalist, and professional photographer, and coached both high school and collegiate teams as well as amateur ASA teams. Ms. Martin is co-owner of Bywater Books and currently splits her time between writing and publishing.

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Rea Nolan Martin is the author of three novels: The Sublime Transformation of Vera Wright; Mystic Tea; and The Anesthesia Game; and a collection of inspirational essays, Walking on Water. She is also the author of numerous short stories and poetry published in national literary magazines and anthologies.

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Colby Martin is co-pastor of Sojourn Grace Collective, a progressive christian church in San Diego. Colby blogs at colbymartinonline.com and posts his sermons at sojourngrace.com.

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