Poisoned by Proxy, a Mary MacIntosh novel

The prosecution believed the Landers file was a case of Munchausen’s by Proxy - child abuse in which a parent with deep psychological problems induces symptoms of illness in his or her child. As Mac delves deeper into the dynamics of the family, she is horrified by the web of conspiracy and betrayal that a love triangle can weave. Mac vows to protect the boy at all costs, including her own life.