Ellis Amdur balances two careers, that as a crisis intervention specialist, through his company, Edgework and as a 50+ year practitioner of traditional Japanese martial arts. His writing meets right in the middle. Among his non-fiction works are thirteen profession-specific books on verbal de-escalation of aggression, two books for hostage negotiators, two on the art of tactical communication with hostile individuals, one on the art of psychotherapy, and has edited a book by Evelyn & Shelley Amdur on the former's career as a hospice social worker. He has written and published three books on martial arts, the iconoclastic Dueling with Osensei: Old School, a work on classical martial traditions and Hidden in Plain Sight, on esoteric knowledge within various martial traditions. In fiction, he is a co-author of the graphic novel, Cimmaronin, and the author of two novels, The Girl with the Face of the Moon, and Lost Boy. His third novel, Little Bird & the Tiger, set in Meiji Japan, is due for release in 2023. His books are considered unique in that he uses his own experiences, often hair-raising or outrageous, as illustrations of the principles about which he writes, but it is also backed by solid research, and boots-on-the-ground experience.