The World of Henry Orient is a 1964 American comedy film directed by George Roy Hill and starring Peter Sellers, Paula Prentiss, Angela Lansbury, Tippy Walker, Merrie Spaeth, Phyllis Thaxter, Bibi Osterwald and Tom Bosley. It is based on the novel of the same name by Nora Johnson, who co-wrote the screenplay with her father, Nunnally Johnson. The original story was inspired in part by Nora Johnson's own experiences as a schoolgirl, as well as by a real-life incident involving singer Tony Bennett and two teenaged fans. Plot In early 1960s New York City, concert pianist Henry Orient (Peter Sellers) pursues an affair with a married woman, Stella Dunnworthy (Paula Prentiss), while two adolescent private-school girls, Valerie "Val" Boyd (Tippy Walker) and Marian "Gil" Gilbert (Merrie Spaeth), stalk him and write their fantasies about him in a diary. Orient's paranoia leads him to believe that the two girls, who seem to pop up everywhere he goes, are spies sent by his would-be mistress's husband. In reality, fourteen-year-old Val, the bright and imaginative daughter of wealthy international trade expert Frank Boyd (Tom Bosley) and his unfaithful, snobbish wife Isabel (Angela Lansbury), has developed a teenage crush on Henry after seeing him in concert, and has involved her best friend Gil. Although Gil's parents are divorced, she lives a relatively happy and stable life in a townhouse in the city with her mother and her mother's also-divorced female friend, while Val, whose parents are still married (albeit unhappily), sees a psychiatrist daily and lives with paid caretakers while her parents travel the world. Val's parents return for Christmas, and Val becomes concerned that her mother Isabel is having an extramarital affair with a young pianist. Val's interference leads her mother to find and read Val's diary. Isabel chastises Val and seeks out Henry, ostensibly to tell him to stay away from her underage daughter. The cheating Isabel and the womanizing Henry are quickly attracted to each other and begin an affair, which Val and Gil accidentally discover while stalking Henry outside his apartment. Val's devastation and Isabel's attempts to cover up her own behavior cause Frank to figure out what happened. Frank and Isabel separate, while the paranoid Henry flees the country. However, positive changes for Val result as Frank, who unlike Isabel genuinely cares about his daughter, resolves to stop traveling so much and establish a real home where he and