When Mercy Mulcahy was 40 years old, she was accused of killing her elderly and tyrannical father, Martin. Now at the end of her own life, she has written a book about what really happened on the fateful night of Christmas Eve, 1989 -- and she desperately wants her daughter, Star, to read her explanation and finally understand. The tragic and beautiful Mercy has devoted her life to protecting Star from neglect and cruelty, especially from her father, whose behavior so blighted her own life. Was Martin's death, as many believe, an assisted suicide? Or something more sinister? Or is Mercy...