The first few years of any child's life must seem overwhelming and confusing as they try to understand the world they have entered, what it all means and who the people are around them. William Tyrrell's early life was an extreme version of this.

The names of people in this podcast have been changed for legal reasons. William's foster mother (Jane) and father (Peter), William's sister (Lindsay) and brother (Francis) and William's biological mother (Stacey) and father (Daniel). All police statements attributed to these people are read by actors.

Thanks to Dr Amy Conley-Wright from the University of Sydney.

Visit the webpage of the official Where's William? campaign: http://www.whereswilliam.org

If you know anything that can assist with solving this case, please contact police or Crimestoppers on 1800 333 000

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