Big Sky P.I. is the title of this book; number three of a trilogy called The Wally Webb Mysteries. The main character is Walter Wallace Webb the owner of a private investigative service known as Tangled Web Solutions. The primary setting is in Tucson, AZ. However, Wally's wife's brother, Tim still lives on the 3,000 acre family ranch in Montana. Wally and Shannon go there to visit but get drawn into investigating the theft of the ranch's 10 prize Hereford cows worth $20,000. Wally's efforts to find the thief and the cows earn him the title of Big Sky P.I.