We may have discovered who killed Abdullah during last week’s opening episode, but we have no idea why the unfortunate pizza delivery driver was gunned down in the street.

This week’s second chapter follows the woman who pulled the trigger, troubled army desk clerk Sandrine Shaw (Jeany Spark), to see who’s pulling her strings.

Meanwhile, pizza-shop manager Laurie has gone missing and during a search at her home DI Kip Glaspie (Carey Mulligan) discovers a hidden stash of cash.

There’s a promising lead from Abdullah’s sister Fatima, who shares an explosive piece of information about her journey to the UK, which could have enormous consequences if true…