On a November evening, a woman calls 911 for her husband Greg after finding him unresponsive and, bizarrely, covered in rose petals. Is it murder?

Death rate triples on a hospital ward linked to nurse Kristen Gilbert. Could this seemingly typical 'soccer mom' really be a killer?

A nurse in a doctor's white coat is linked to mysterious patient deaths at a medical centre, but even his shock confession can't bring him to justice.