I think the decision of CO's podcast to release an update episode that only contains the FD's statement/interview is quite telling. Particularly as she made a point to highlight the use/misuse of the word 'balcony' when explaining that William was playing on the back deck.
Overington would've been researching every nook and cranny of this case for her book and the podcast so must have a solid working theory at this point. Also her podcast painted a picture of the battler bio family hard done by against the privileged FP who were viewed as his only family by the media early on.
Whereas Harris paints 'Jane and Peter' as the sole grieving parents, in my opinion, because of how close she was to the case as a reporter from the first day onwards. Two very different takes.
A New Direction — Where's William Tyrrell? — Overcast