Spiller, Robert

Robert Spiller lives in Colorado Springs with his wife Barbara. "Radical Equations" is the fourth book in the Bonnie Pinkwater adult cozy mystery series preceded by "The Witch of Agnesi", "A Calculated Demise", "Irrational Numbers", and followed by "Napier's Bones". A Mathematics teacher for thirty five years, Robert recently retired to write full time. He can be reached at rspiller2004@gmail.com or on the web at www.rspiller.com.