The prison scenes in this episode were filmed within the former Northallerton Prison in North Yorkshire. Much of the prison is now demolished and is being redeveloped.
Parts of the food factory scenes were filmed (for the interior shots) in the SK food factory in South Bank (near Middlesbrough).
Debut of Alexandra Mardell.
Struan Rodger (Father O'Brien) & Ace Bhatti (Stuart Mayfield) also worked together on Shetland (2013) as Alec & Calvin Sarwar respectively.