La buena madre

When troubled teenager Jillian is arrested and her mother disappears, her best friend Melanie's respected family takes her in. But when Melanie dies after an illness, Jillian discovers that Melanie's mother may not be the "Good Mother" we think she is. Now her younger brother is starting to have similar symptoms and Jillian must discover the truth, save the boy's life and face the fact that the only mother figure she's ever known may be a murderer.