I remember the first series as having quite a complicated plot, and as is usual with me got a bit lost.
But it was an interesting blend of Irish crime noir and some Belgian noir as well!
It looks like it might be following on from series 1 in which case I hope they do a recap.
https://www.bbc.co.uk/iplayer/episode/p0grklc5/hidden-assets-series-2-episode-1