According to the book description of When A Guardian Angel Falls, "Mark Tanner had nearly thirty years of law enforcement experience, but after being injured in the line of duty, he lost everything and was forced to leave Wyoming and chose to start a new life in Nevada where he takes a security job in the casino industry."

According to the book description of A Common Sense Guide to Raising Your Children: from a Cop's Perspective, "With over twenty-six years in law enforcement, Marty Turner overcame many obstacles while growing up. Marty applied his life lessons to helping others throughout his career and now he wants to share them with you. Learn through the eyes of those who see it firsthand, day after day. Some of those experiences are humorous, some are tragic. All are real. Education is the best assurance that future generations will succeed. In this biographical self-help book, Marty explains, through his own experiences, how to help keep your children off drugs and what signs to look for that indicate your child may be heading down the wrong road. The greatest tragedy in life is not learning from the mistakes and misfortunes of others. Wisdom and knowledge, just like freedom, don't come free!"