Hunter is a two-part BBC One police crime drama, commissioned in 2008 as a follow-up to Five Days, the 2007 series which introduced the protagonists of Hunter – DSI Iain Barclay (Hugh Bonneville) and DS Amy Foster (Janet McTeer) – who reprise their roles as the dysfunctional detective pair. The two-part drama aired on Sunday 18 and Monday 19 January 2009 on BBC One, and achieved an average of 5.4 million viewers during first episode. The drama was also simulcast on BBC HD. The drama was intended as a backdoor pilot for a potential series, but no further episodes were commissioned.