As a professional writer since 1978, Mr. Christensen has penned nearly 60 published books with five publishers, dozens of magazine articles, and edited a police newspaper for nearly eight years. He has written on the martial arts, missing children, street gangs, school shootings, workplace violence, riots, police-involved shootings, nutrition, exercise, prostitution, and various street subcultures. Of late, he has been writing a police and martial arts thriller fiction series called Dukkha. Four have been published and one more is in production.
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