When Lucy Harbin arrives early from a trip, she sees her husband with his mistress sleeping in her bed, so she kills them with an ax. Her little daughter Carol witnesses the murder. After twenty years in an asylum, Lucy is released by her Dr. Anderson and her brother Bill Cutler brings her back to her farm where he lives with his wife and Carol. Lucy meets her estranged daughter and she learns that she is going steady with the wealthy Michael Fields. Soon Lucy has nightmares and hears children singing a pejorative song about her. When Dr. Anderson unexpectedly visits her at home, she shows that she is unbalanced and the doctor decides to take her back to the asylum. However he is axed in the barn. Is Lucy killing again?—Claudio Carvalho, Rio de Janeiro, Brazil