[Part 1 of 2] *** Content warning: child victims *** Married couple Craig and Kathleen Folbigg wanted nothing more than to be parents. Throughout the late 1980s and 1990s, Kathleen gave birth to four children—Caleb, Patrick, Sarah and Laura—but tragically, none of them survived past their second birthdays. While each death was initially attributed to natural causes, the question started to emerge – had Kathleen done something to harm her children?