This time around, Tammy, played by Sandra Dee, becomes a nurse's aid to care for an old rich woman and causes a commotion. Since she is charming and warm, everyone likes her--especially Dr. Mark Cheswick (Peter Fonda)--who is warned by boss Dr. Bentley (MacDonald Carey) of the consequences of his pursuit. Fearing for his job, Doc Cheswick backs off, but everything gets complicated by romantic inclinations between head nurse Rachel Coleman (Margaret Lindsay) and head Doc Bentley. After Tammy saves the elderly woman's life and Bentley and Rachel get together, she and the Doctor soon are left to bask in the glow of new love. Third in the series of four, Tammy and the Doctor spun from the original Tammy and the Bachelor (1957)--starring Debbie Reynolds, and is followed by the last Tammy and the Millionaire (1967).