I was thinking about this this morning (in Europe).
The PCA is not clear that this was the specific words that this male voice used - perhaps DM was tired and/or drunk at the time that she heard it or did not register it as being a serious statement, and then was stressed/distressed when she recalled it later as a witness in later interview. Page 4 of the PCA states:
"a male voice say something to the effect of "it's ok, I'm going to help you."
We do not know, for example:
- who - E or perp or some other - said it. It is not alleged in the PCA that the perp had said it,
- if the statement is accurate, in the words used or sentiment expressed,
- the timing of the statement, especially in relation to a murder or murders,
- the time of the statement, especially in relation to other evidence such as as the CCTV on the neighbouring house, and
- the intonation or meaning that was being expressed when this somebody had allegedly said it. Indeed, try it, you could say those words in a number of ways, with a different emphasis, to create a different meaning behind it. It can sound very sinister, or not.
But these words are subject to a high degree of interpretation, and as noted the witness account seems unreliable. But the sentiment - helping someone to do something - is interesting to me:
I understand that X and M were waitresses in a local restaurant, the Mad Greek. Perhaps KB had became aware of X and M in that place. If KB had encountered X there and therefore "knew" her, and assuming the male voice was KB and he was using this language at the time he killed her - which is not something alleged in the PCA - perhaps they could have had a prior conversation or disagreement in the context of providing a table service at the restaurant, and the perp was bringing it up again.
All just MOO and pure speculation. Sorry if already mentioned.