On February 9, 1960, while on his way to work, Coors was murdered in a failed kidnapping attempt by escaped murderer Joseph Corbett Jr. on Turkey Creek Bridge near Morrison, Colorado. On the morning of February 9, a milkman discovered Coors' International Travelall on the bridge, empty of occupants and with the radio on. Police identified the vehicle as belonging to Coors and began a search of the area that turned up Coors' hat, glasses, and a blood stain. The following day, his wife Mary received a ransom note in the mail requesting $500,000 for his safe release. The hunt for Coors and his assailant was the largest FBI effort since the Lindbergh baby kidnapping. On September 11, 1960, a hiker stumbled upon a pair of discarded trousers in the Rocky Mountains, and found in the pocket a penknife bearing the initials 'ACIII'. Then on September 15, 1960, a shirt belonging to Coors, and his skull, were found in a remote area near Pikes Peak. A witness turned up that revealed he had seen a yellow 1951 Mercury with the letters "AT" and numerals "62" somewhere in the license plate combination on the bridge around the time of Coors' disappearance. A car matching the description was found torched in a dump in Atlantic City, New Jersey. Investigators traced the car back to a Colorado resident named Walter Osborne, who suspiciously moved out of his Denver apartment the day after the kidnapping. The name "Walter Osborne" was revealed to be an alias for Corbett. Due to international obsession with the case, including a picture of Corbett in an issue of Reader's Digest, Corbett was recognized by two neighbors in Vancouver, BC and was arrested. As there were no witnesses, prosecutors built their case against Corbett through circumstantial and forensic evidence. Corbett's coworkers overheard him talking about a plan that would earn him over a million dollars and the ransom note typeface was traced back to Corbett's typewriter. The biggest piece of evidence, however, was the dirt found in the undercarriage of the yellow Mercury. Investigators were able to trace the car's path by noting the rare pink feldspar and granite minerals found in the area Coors' body was discovered. Corbett was convicted of first degree murder on March 29, 1961, and sentenced to life in state prison. He was released on parole in 1980 for good behavior and drove a truck for The Salvation Army until he retired. He died by suicide at the age of 80 in August 2009. He lived and died just 10 miles from where he killed Coors and always maintained his innocence. The kidnapping was featured in the Forensic Files episode "Bitter Brew." The 2017 true crime book The Death of an Heir: Adolph Coors III and the Murder That Rocked an American Brewing Dynasty'' by Phillip Jett details the kidnapping.
