Leslie McGuirk is an internationally recognized Astrologer, children's picture book author and illustrator, and teacher with over 35 years of experience. She is the author of The Power of Mercury (HarperCollins) and is known for her clear, creative, and practical approach to Astrology.

She teaches Astrology as a pattern-based system—helping people understand themselves, their relationships, and how they move through the world. Leslie has taught at Rancho La Puerta, The Jim Henson Company, Campowerment, Morgan Stanley, and AARP, and her work is valued for its accuracy, warmth, and real-life application.