Wednesday's Child

Ten-year-old Bobby and a group of friends see Bobby's mother kissing a man not her husband. Despite serious concerns about Bobby, a divorce ensues and Bobby, although thoroughly disenchanted with his mother, is sent away with her where month after month despite all her efforts he grows more depressed, dreaming of reunification with his beloved father. On returning to his father at vacation, he finds him preoccupied with an impending second marriage. Bobby suffers a serious breakdown but is nevertheless packed off to military school. - IMDb