An air force veteran of World War II, R. Allan McCall developed a writing background in his own successful advertising agency business. Upon retirement, he expanded his creative interest into writing novels. Double Exposure is his third book published under the Infinity Publishing label.

Allan lives with his wife, Marnie, in Muskoka, a picturesque resort area 120 miles north of Toronto, Canada. For twenty-five years they spent part of each winter in Naples, Florida, the setting for his mystery story The Floater.