Kathy Folbigg claims she is innocent of killing her four children, in a case reminiscent of Sally Clark, whose first son died at 11 weeks, and second at just eight weeks. Convicted of killing her own children, a judge sentenced Clark to life imprisonment.

While Sally Clark sits in prison for life, journalist John Sweeny and attorney Marylin Stowe look at her case and make their own startling discoveries separately. In Australia, Kathleen Folbigg is convicted of a similar crime.