Both stars of "The Clock" were plagued by personal problems that continued throughout their lives. During filming, Garland became increasingly addicted to prescription drugs given by the studio to control her weight and pep her up. Just prior to filming "The Clock", Walker learned his wife, Jennifer Jones, was having an affair with film producer David O. Selznick and wanted a divorce. Walker began to spiral downward. During filming, Garland would often find him drunk in a Los Angeles bar and then sober him up throughout the night so he could appear before cameras the next day.