Despite a seemingly successful career, Bates's life, both on and off screen, started unravelling. She became a victim of extreme mood swings, insecurity, ill health, and chronic depression. In 1954, she won the role of Cathy on the NBC sitcom It's a Great Life, co-starring Frances Bavier as her mother, Amy Morgan, and James Dunn as her uncle, Earl Morgan. After 26 episodes, she was written out of the show due to her erratic behavior, depression and instability. Bates tried to salvage her career and travelled to England to find work. She was signed on as a contract player with the Rank Organisation, only to be replaced in two leading roles before filming began. Bates continued to be too emotionally unstable to work and in 1957, her contract with the Rank Organisation was cancelled.