Line Of Duty

BBC1, 9pm, today

Are your nails bitten down to the quick? Have you had sleepless nights wondering whodunnit? Did you spend hours by the watercooler wondering if Steve Arnott would live or die following his tumble down the stairwell in episode three? And have you vented rage and fury at the machinations of Roz Huntley?

If your answer to any or all of these questions is “no”, then you clearly either haven’t been paying attention to season four of the acclaimed crime drama, or you haven’t been watching it at all.

OK, so at times the plot has been a little overblown, but what it’s missed in logic it’s more than made up for in good, old fashioned thrills and spills.

But now it’s all about to reach the end – will Roz confess to save her husband’s neck, or will there be another twist to this enthralling tale?