Nathalie Mahy (10 years old) and Stacy Lemmens (7 years old) were two Belgian stepsisters, who disappeared in the city of Liège on June 10, 2006 and were found murdered on June 28, 2006. The disappearance and subsequent finding of the murdered girls caused commotion in Belgium, even more so because they reminded many of the paedophile murders committed by Marc Dutroux some ten years earlier.