This NAA file consists of almost 1000 pages of reports concerning the suspected dark goings on at the Philips Radio and Lamp factory in Australia during WW2.
Police were tapping phone lines , houses were raided.
Dutch nationals were interrogated. This intriguing cloak and dagger saga could be a TV series in the maklng.
https://recordsearch.naa.gov.au/Sear....aspx?B=447584