Marissa Irvine does not find her missing son through standard police coordinates—instead, a shocking revelation about Carrie Finch's tragic past forces her into a lethal, domestic final showdown. The final episode of Peacock’s record-breaking mystery thriller All Her Fault proves that a mother's worst nightmare wasn't a random act of violence, but a calculated, decade-long cycle of grief and obsession. All Her Fault Ending Explained The ending of All Her Fault hinges on Maris