Actually, I cannot remember where I saw it, but I did read that there was an expert analysis done on the code, and they said it was weighted heavily with letters that begin words in the English language. They hypothesized that it might be a memory device, such as how some people memorize the nonsense word PEMDAS to remember the order in which a math equation needs to be done (Parenthesis, exponents, multiplication, division, addition, and subtraction).
And where did the idea come from that his clothes were tailor-made? If they were, they were most likely not tailor-made for him. Clothes were in short supply due to the recent war. Even people who were reasonably well off were wearing clothes that were second-hand items. That is why the police didn’t believe that the name T Keane was his. It had probably been the name of the original owner and the garment had found its way into a second-hand store. The other labels that were found were dry cleaning labels, which the police believed might have been ones that were missed, meaning that the labels that were torn off might have been the same thing.
Something I have always found interesting is that no care was taken with how the labels were ripped off. Considering that clothes were such a hard to come by commodity, the only logical explanation is that whoever did it knew he would not need the clothes anymore because he would be dead or was dead. Thus, it is hard to argue natural causes for the death, as if he had a heart attack (or whatever) and died on the beach, there would be no reason for him to believe that he would not be wearing those clothes again, and nobody else would care about the labels if they were not trying to cover their tracks.
Personally, I don’t know how the woman could not have known him. It would make for some really improbable coincidences. Plus, her reaction is not what anyone would expect for someone who is telling the truth. However, the Soviet spy theory is at odds with the personal thread, in my opinion. Why would he risk a woman he love (or loved) by carrying around information that could lead investigators back to her and the child, if he knew about him? And I’d be surprised if she was a spy too. I’d assume she’d be more proficient at lying. That being said, an undetectable poison does seem to hint at more than someone murdering him out of jealousy or something. Unless it was a chemist, which is possible, but not something that I would assume with no other evidence.