Carl's sister Freda was married to Gerald Keane - who did use the name Jerry in the theatre. Potentially the white tie was J Keane. Carl was married to Dorothy Jean Robertson. There is a Brazilian researcher Patricia Lacerda who is committed to solving Dorothy's life.
One other Aussie mystery I researched was the Pyjama Girl which the PROV tweeted
https://medium.com/@binreminded/why-the-pyjama-girl-is-not-linda-agostini-dc619e12e72e
I also located a CD by happenstance searching for Pajama Girl:
But my big mission in life is for someone to properly investigate the role of Jane Marie Wallentine in the 1970 Isdal Woman plot and why the BBC/NRK DIIV podcast ignored her role when she was ID'd as the body by hostel staff. She was also the only lone woman traveller with 2 identical suitcases to the ones in the Bergen train station locker, bought Celebrity boots and a hydrofoil ticket to Bergen for the 19th. She was also the only person in the evidence who had contact with someone who worked in the Vinmonopol the alcohol shop (Normann Laskemoen). Linked to the evidence at the crime scene. I believe she called him Normy. I was told the new Isdal Woman docudrama being created this year was going to include Jane Marie Wallentine and involve me - but apparently not now.