about Mrs. Greenlease's condition, she discovered the truth and her husband contacted the Federal Bureau of Investigation (FBI). Hall and Heady took the child across the state line to Johnson County, Kansas, where Hall shot him dead with a snubnosed .38 caliber revolver. They then took the child's body to St. Joseph and buried him in the backyard of Heady's house, at 1201 South 38th Street. Ransom After the murder, Hall and Heady sent Bobby's father messages in the mail and phone calls demanding a ransom of $600,000 ($ million today). Greenlease, desperately trying to save his son, held off the authorities and paid the money. At that time, it was the largest ransom ever paid in American history, and remained so until the 1972 kidnapping of Virginia Piper. Hall became convinced that police would trace him and Heady to St. Joseph, so he randomly decided to drive to St. Louis. The couple collected the ransom and fled. Arrest Once in St. Louis, Hall left Heady in the middle of the night in a rented room. He contacted criminal associates to enlist their help in diverting police attention. One of the associates, a former sex worker named Sandra O'Day, was supposed to fly to Los Angeles and mail a letter Hall had written. It was thought that this would divert police attention from St. Louis. However, O'Day caught a glimpse of the ransom money. St. Louis police soon learned that Hall was flaunting a large sum of money, and they brought him in for questioning. Hall eventually implicated Heady. The police found her at an apartment at 4504 Arsenal Street and discovered Bobby's body in a shallow grave in her back yard. Bobby was later interred in the family mausoleum at Forest Hill Calvary Cemetery in Kansas City. Trial and execution Bobby's kidnapping and murder scandalized the nation. Because he had been taken over state lines, the crime became a federal case under the Federal Kidnapping Act. Hall and Heady both pleaded guilty to kidnapping. The jury deliberated an hour and eight minutes before recommending a death sentence. The two were executed together in the Missouri gas chamber on December 18, 1953. Only eleven weeks and four days passed between the time the crime was committed and the executions. Heady is one of only four women to have ever been executed by federal authorities as of 2021: the others being