Prosecutors allege Lindsay Clancy made a "calculated decision" in killing her kids, while the defense says she was overmedicated and suffering from extreme postpartum psychosis.

A Massachusetts woman has gone on trial in a case in which her lawyers are expected to argue that postpartum issues were the reason she killed her three children.

PLYMOUTH, Mass. (AP) — In the months after the birth of her third child, Lindsay Clancy 's mental health collapsed. Manic, unable to sleep and stricken with thoughts of harming