Bang (2017)

A loner comes into possession of a gun in Port Talbot, and his sister is the detective trying to trace it. Jacob Ifan and Catrin Stewart play the siblings, and the steelworks town gives the family story its industrial edge. Bang is the most honest picture here of how bilingual south Wales actually talks: rather than making two versions, it lets characters move between Welsh and English as many people there do every day, which creator Roger Williams said reflects living life through two languages. That makes it a gentle step for learners, with English subtitles for the Welsh. Two series, 14 episodes.