Originally posted by Trevor Marriott
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So, a trained medico can possibly detect rigor within one hour (which does not mean that rigor will set in after an hour only, it means that it takes skill to see it when it occurs in that short a time period), but the expected thing is that the signs will not be there until after a smallish number of hours. No exact time can be established using rigor as a determining parameter, which makes sense since we know that there are significant differences inbetween victims.
The general rule, though, seems to hold true: when somebody dies, the first signs of rigor will generally be there after a smallish number of hours. And Biggs tells us that with alcoholic, malnourished women (which is an exact description of Chapman), there will often be a less pronounced process, meaning that a longer time than expected may have passed when an examining medico notices an onsetting rigor.
So the consistent and logical explanation to why Chapman was cold and displayed signs of onsetting rigor is that she had been dead for some hours, perhaps three or four, that the murder thus was in line with the others in terms of timing, that the killer did not deviate from his preferred method of killing in the dark hours and that there is nothing at all strange about how nobody saw any killer, bathing in blood, scuttling away down Hanbury Street at 5.45 AM that day, in bright morning light. There was never any such character. The killer had escaped under the cover of darkness, as always, some hours earlier.
All is well, therefore. And as it should be.
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