'Somebody knows' what happened to William

By Hannah Higgins
Updated April 24 2019 - 11:08am, first published 11:02am
William Tyrrell went missing from his foster grandmother's home on the NSW mid north coast in 2014.
William Tyrrell went missing from his foster grandmother's home on the NSW mid north coast in 2014.

Someone "undoubtedly" knows more about what happened to William Tyrrell, an inquest into his disappearance and suspected death has been told.