Gonzaullas believed the attack on Hollis and Larey was not committed by the Phantom. He also believed that someone else murdered Virgil Starks. Gonzaullas retired from the Rangers in 1951 and moved to Hollywood to become a technical consultant for radio, television, and motion pictures (most notably, the long-running 1950s radio and TV show, "Tales of the Texas Rangers"). Gonzaullas, a Mason and a Presbyterian, died of cancer on February 13, 1977 at the age of 85 in Dallas, Texas. He is buried in Sparkman/Hillcrest Memorial Park in Dallas, Texas.