Our Authors

Dan Krokos

After pumping gas for nine years to put himself through college, Dan Krokos, now twenty-eight, dropped out to write full-time. He is currently hard at work on three separate projects: the final stop for Miranda North in the False Memory series, the next adventure for thirteen-year-old Mason Stark in The Planet Thieves series, and his first adult thriller. All of Dan’s books have been optioned for film or television, and False Memory recently won the International Thriller Writer’s Award for best Young Adult book. He enjoys riding his Harley, playing MMORPGs, and drinking coffee. If he had to choose a faction, he’d choose Dauntless. They have the most fun. But he’d go with Amity if they were into ziplining and jumping into nets and stuff.

David Kronfeld

David Kronfeld founded JK&B in 1996. Kronfeld is an experienced venture capital investor and telecommunications industry executive with more than 40 years of experience. Prior to forming JK&B, Kronfeld was a General Partner at Boston Capital Ventures (“BCV”) where he focused on making venture capital investments in companies in the telecommunications and software industries. Before joining BCV, Kronfeld was with Ameritech where he was the Vice President of Acquisitions and Venture Investments responsible for directing Ameritech’s venture capital investments in a broad array of telecommunications-related companies and all of Ameritech’s mergers and acquisitions activities. In addition, Kronfeld was a Senior Manager at Booz Allen & Hamilton and a Systems Analyst at Electronic Data Systems (E.D.S.). Kronfeld earned a Bachelor of Science in Electrical Engineering with high honors and a Master of Science in Computer Science from Stevens Institute of Technology and a Master of Business Administration from The Wharton School of Business.

Books by David Kronfeld

Robert F. Krueger, Ph.D.

Robert F. Krueger, Ph.D., is professor of psychology at the University of Minnesota-Twin Cities and an associate editor of the Journal of Abnormal Psychology. Dr. Krueger has been honored with both early- and mid-career distinguished research awards from the American Psychological Association and the American Psychological Foundation. His professional interests include personality, psychopathology, statistics and behavior genetics; that said, he feels slightly unnerved by the possibility that, ultimately, his most widely read publication might be about “Firefly.” Aside from his psychological endeavors, Dr. Krueger enjoys things like “The Simpsons,” jazz, science fiction and video gaming. His top secret desire is that this chapter will become a citation classic and someday earn him the degree of Doctor of Science Fiction, honoris causa.

Christine Kruse-Feldstein

Crime Scene Detective Christine Kruse-Feldstein has been with the Miami-Dade Police Department for over 10 years. She also has experience in law enforcement in Kentucky and was a part of a volunteer fire department working as an emergency medical technician. Overall she has been involved in law enforcement or fire rescue for 16 years. One of Christine’s favorite sayings is “I do not respond unless you are raped, robbed, shot, stabbed or dead.”

Oleksandr Kubrakov

Oleksandr Kubrakov is the former deputy prime minister for restoration of Ukraine and the former minister of infrastructure under President Zelensky. He entered national politics in 2019 as a member of Ukrainian parliament. During Russia’s full-scale invasion, Kubrakov played a key role in maintaining Ukraine’s economic and logistical stability, and led the nationwide reconstruction policy. After leaving public office in 2024, Kubrakov founded We Build Ukraine, an independent think tank focused on shaping Ukraine’s post-war economic transformation.

Books by Oleksandr Kubrakov

Keegan Kuhn

Keegan Kuhn is the award-winning co-director of the highly acclaimed documentary film Cowspiracy: The Sustainability Secret, executive produced for Netflix by Leonardo DiCaprio. Kuhn is the owner and operator of First Spark Media, a digital film production company tailored to creating films for social justice. Kuhn’s skills as a director, producer, cinematographer, editor, animator and composer have been utilized in film subjects as diverse as modern Alaskan homesteading, gender inequality, animal rescues, Buddhism, endurance sports and environmental destruction. He is motivated by a deep desire to shed light on untold stories of the most downtrodden in our society, and to raise awareness through greater visibility of social justice issues. Kuhn is the owner of the camera accessory company—First Spark Gear—and creator of the educational music project True Nature. He lives with his partner Shani in the East Bay of San Francisco, California.

Books by Keegan Kuhn

James Anthony Kuhoric

James Anthony Kuhoric is known for his work writing licensed science fiction and horror comic books. He’s crafted tales for many fan-favorite series including “Battlestar Galactica,” “First Wave,” “Lexx,” “Army of Darkness” and “Stargate: SG-1.” To this day he maintains that next to his family, quality science fiction is his greatest love. People who know him best sometimes call him “Starbuck.”

John Kulisek

John Kulisek

John Kulisek is president of The Norben Group, a sales and marketing firm specializing in the production, import, and distribution of fine permanent botanicals that operates in the United States, China, and Hong Kong. Some of the many places his quotes and managerial philosophies have appeared in and on include the Wall Street Journal, Microsoft.com, and ABC News. He lives in Tenafly, N.J., with his wife, Pamela, and children Zachary and Ariana.

Books by John Kulisek

AJ Kumar

AJ Kumar is a digital marketing expert dedicated to helping experts systematically build fame and authority through personality-driven media companies. As the founder of The Limitless Company, a social media agency, AJ specializes in establishing thought leaders as industry authorities. His journey began after connecting with mentor Neil Patel and honing his skills at a San Francisco–based digital marketing agency in 2010. AJ’s breakthrough came in 2012 when he transformed an author into a global industry–leading guru, achieving significant online traffic and revenue growth. He has also guided CEOs, reality TV stars, founders, and Fortune 500 companies. In 2020, AJ founded The Limitless Company to create a scalable system for guru brand building, positioning himself as the “Digital Maestro.” AJ and his team develop captivating content, distribute it across platforms, and optimize data-driven strategies to convert attention into revenue. AJ’s vision is to establish a network of talent powered by The Limitless Company, running it as a next-generation social media content studio that engages audiences and drives results. Through creativity and technology, AJ is redefining influence and fulfilling his American dream.

Books by AJ Kumar

Robert Kurzban, Ph.D.

Robert Kurzban, Ph.D., is currently an assistant professor at the University of Pennsylvania in the department of psychology. He received his Ph.D. at the University of California Santa Barbara, and received postdoctoral training at Caltech, UCLA and the University of Arizona. His research focuses on evolved cognitive adaptations for navigating the social world in domains such as mate choice, friendship, morality and cooperation.