Don't miss a thing by getting the latest from the Manchester Evening News sent direct to your inbox Line of Duty has us all hooked - so it's no surprise that the Gogglebox stars have been watching too.
But it's Jenny Newby, who stars on the Channel 4 show alongside best pal Lee Riley, who has had fans in stitches over her weekly habit.
We all know the BBC One cop drama can get VERY complicated - just think about 'CHIS' gate from episode one of the latest series.
So, Jenny keeps a notepad of clues for tracking down the mysterious and corrupt 'H' as well as dictionary of all the acronyms any viewer needs for an intense interview scene.
Read more on manchestereveningnews.co.uk