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Betrayal is a 1974 made-for-TV movie starring Tisha Sterling as Gretchen Addison, a lonesome widow whose quest for companionship goes tragically awry. The story centers on the dynamics between Addison and Helen Mercer (Amanda Blake), a beautiful young lady hired to offer the widow a measure of friendship and meaningful conversation. As the relationship evolves on-screen into a bond that appears to closely resemble that of a mother and daughter, viewers come to realize that Helen has far more sinister intentions. Along with her unscrupulous boyfriend Jay (Sam Groom), Helen plots to manipulate, betray, and ultimately rob the lonely Widow Addison of both her money and her possessions. Although the film's prologue offers viewers insight into Helen's true nature, the gradual measures by which Addison uncovers Helen and Jay's deception lend suspense and depth to the storyline. Shot in black-and-white, the film adds visual interest for modern audiences through the use of period costume and elaborate, labyrinthine interior sets.