"You may not be able to pinpoint the time of death from rigor or hypostasis, but nevertheless be able to rule out a time which is obviously impossible."
Yes, IF you're able to examine the bodies and not just photographs.
You seem to be confusing two different points. Professor Knight did not mean to say that he thought rigor mortis and hypostasis were reliable indicators if they were perceived directly as opposed to being viewed in photographs. With respect to the point he was making they are just as unreliable when perceived directly by an examiner.
Meloni and Cavalli did not express a view which contradicted that of Knight in the article. They were answering a different question. To rule out a time of death which is obviously impossible to a trained expert is not the same as giving an accurate estimation.
The absence of rigor mortis.
The absence of advanced hypostasis.
Fresh blood still flowing from the second wound.
These are three indications that Sheila could not have been dead for as long as seven hours.
By the way, I would like to know which experts back the view that this photograph is "enhanced".
It's just a myth which originated on forums.
On the other hand, this degraded image has has distorted colours which suggests it has been copied several times. The carpet is a dingy grey colour.
Compare it to the one showing the true colour of the carpet.
