"Squizzy" is the latest in the Underbelly series, Underbelly is a Australian series which is based on crime characters in the country dating from the early 1900's to present day,
en.wikipedia.org/wiki/Underbelly_(TV_series)
"Squizzy" is set between 1915-1927, it's only 8 episodes long but like all the series in the franchise it is very well shot and in my opinion extremely enyojable to watch (if you like that sort of thing of course)