France Winddance Twine is professor of sociology at the University of California, Santa Barbara. She is the author and a coeditor of ten books, including Outsourcing the Womb: Race, Class and Gestational Surrogacy in a Global Market and A White Side of Black Britain: Interracial Intimacy and Racial Literacy.

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Dr. Abraham J. Twerski is founder and medical director emeritus of the Gateway Rehabilitation Center in Pittsburgh, Pennsylvania. A rabbi, psychiatrist, and chemical dependency counselor, he is the author of numerous journal articles and books, including Self-Discovery in Recovery and I Didn't Ask to Be in This Family.

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Jean M. Twenge, PhD, is a widely published professor of psychology at San Diego State University. Dr. Twenge is the author of Generation Me and coauthor, with W. Keith Campbell, of The Narcissism Epidemic. She lives with her husband in San Diego, California.

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Thomas A. Tweed is Harold and Martha Welch professor of American Studies and professor of history, University of Notre Dame. He was formerly President of the American Academy of Religion. He is the author of several books, including Crossing and Dwelling: A Theory of Religion and Religion: A Very Short Introduction.

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Bark Twain is a dog who knows his mind and is frustrated with the world today. Bark Twain is thinking about buying Dogecoin, getting a Tesla, and flying to space on one of Elon Musk's SpaceX flights. He is no fan of Grumpy Cat or Garfield. Go the Bark to Work is his first book.

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Mark Twain is the pseudonym of Samuel Langhorne Clemens (1835–1910), American writer and humorist, whose best work is characterized by broad, often irreverent humor or biting social satire. Twain's writing is also known for realism of place and language, memorable characters, and hatred of hypocrisy and oppression.

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Merlin Tuttle is an ecologist, wildlife photographer, and conservationist who has studied bats worldwide for more than fifty years. He founded Bat Conservation International in 1982. His work has been featured in Science, the Wall Street Journal, The New Yorker, and National Geographic.

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Lisa Tuttle was born and raised in Texas and moved to Britain in the 1980s. Her first novel, Windhaven, cowritten with George R. R. Martin, was followed by a dozen fantasy, science fiction, and horror adult and YA novels, and hundreds of award-winning short stories collected in several volumes. She lives in Scotland.

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Cosey Fanni Tutti is a performance artist and musician best known for her time in the avant-garde groups Throbbing Gristle and Chris & Cosey. Born in Hull in 1951, she currently resides in Norfolk.

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Ann Tusa is the coauthor, along with her husband and writing partner John, of The Last Division and The Nuremberg Trial. She is a graduate of Cambridge University and lives in London, England.

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John Tusa is a former staff producer and managing director for the BBC and a winner the Royal Television Society's Journalist of the Year award. He is a graduate of Cambridge University, where he met his wife and writing partner, Ann. They live in London, England.

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Jane Ann Turzillo is the Agatha-nominated author of Unsolved Murders & Disappearances in Northeast Ohio and the National Federation of Press Women's award winner for Ohio Train Disasters. A full-time author and speaker, she concentrates on true crime and history, and she is a graduate of the University of Akron.

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