It's been five months since the Nowhere Child podcast finished, the former detective Gary Jubelin has been on trial in Sydney, we won't know the outcome until the magistrate comes back in April. The inquest into William's disappearance is ongoing, with hearings due to resume in March with a result probable in the middle of the year. In the meantime Caroline Overington has finished a book on William's disappearance. Here she reads the first chapter to give a sense of the book and a later...

The truth about William Tyrrell will be revealed, and we will find out what happened to him. The truth will not be forever concealed.

What exactly have police been doing for the nearly five years William has been missing? We look at some of the scenarios and some of the stings.

With few leads to go on - no witnesses they yet know of, and no forensic evidence - police begin rounding up the usual suspects: local sex offenders and pedophiles. But are they any closer to finding William?

Australia is one of the worst democracies when it comes to press freedom. We look at the suppression, the secrets and the lies told in William's case.

The NSW government approved a record $1 million reward for the return of William. We take you inside the public relations campaign designed to keep pressure on police and the government.

What does it mean to be a "person of interest" in a major police investigation? In episode four of Nowhere Child, we follow police down the first lines of inquiry, as the search turns from the hunt for William to those who may have taken him.

William Tyrrell disappeared from outside a house near the state forest. How can we be sure that he didn't get lost, and that he's simply not found? In this week's episode, we examine the extensive land and water search for William; the failure of search teams to find a single trace of him; and the dawning realization that he may have been taken.

William Tyrrell was a foster child, a fact kept from the public for more than two years after he went missing from the township of Kendall on the mid-north-coast of New South Wales on 12 September 2014. What else was being hidden from you? Listen now to Nowhere Child, episode two, More Than William, as we peel back layers of bureaucracy and deceit.

William Tyrrell was a three-year-old boy who disappeared from the township of Kendall on the mid-north-coast of New South Wales on 12 S...

William Tyrrell is the little boy in the Spider-Man suit, missing since September 2014. Caroline Overington delves into the case....