Line of Duty: 10 questions that NEED to be answered in next week's grand finale
![Line of Duty: 10 questions that NEED to be answered in next week's grand finale](https://i.dailymail.co.uk/1s/2021/04/26/12/42228682-0-image-a-20_1619435877970.jpg)
With yet another agonising seven days to wait until the next installment of the BBC drama - the concluding episode of the series - there are still so many questions that need answering.