This post is by guest blogger and respected Somerton Man researcher, Peter Davidson:
I think that I've worked out how all the deaths could be linked, and obviously why, even how the 'suicides' are linked.
I'm 'reasonably' certain of how it was carried out and who played what roles in planning and facilitating the Somerton Man and Tibor Kaldor's silence. Unfortunately for SM and TK they niavely thought they'd be able to ransom a secret. And it would appear that even Jessica didn't realise just how well connected the new 'friends' in Adelaide were nor to what extent they were prepared to act upon a threat to reveal any iota of past current or ongoing operations and trade craft.
E-Cafe, (Economic Commission For Asia and the Far East), being held at the Lapstone Hotel not far from Glenbrook in the Blue Mountains of New South Wales simultaneously with SM's demise upped the ante and required finalisation of the threat. SM probably had no idea just how serious a situation he had created. The conference as it turns out, was all part of the push by British Intelligence for the creation of ASIO, more here:
https://citizensparty.org.au/sites/default/files/2021-08/lapstone.pdf
Enter Hemblys-Scales, MI5 whose curriculum at University included classical literature. On that syllabus was 'that' book. His visit to Adelaide one month prior to meet his future Aunt. A doctor who had practised in Somerton. A night of dining in Glenelg to celebrate her niece's upcoming betrothal or a meeting with a friend, a chemist who's shop was in the same building where her husband doctor's surgery was before moving to Somerton.
Decoding the cypher may explain the true nature of their intention, but was it the threat to expose information for personal or monetary gain? That may depend on the identification of SM. The nature of the ransom was obviously irrelevant to why action was articulated, and that with Hemblys-Scales matriculting the action tells us what was at stake. But whose side was he on?