A Mind to Kill is a police detective series set in Wales, UK. It was developed from a 1991 pilot which starred Philip Madoc as DCI Bain, and Hywel Bennett. The series ran from 1994 to 2004 and first aired as Yr Heliwr on S4C, the Welsh language TV channel, before being broadcast on the UK Network channel, Channel 5. The series was filmed in English and in Welsh, with each scene being shot first in one language and then in the other. It has since been dubbed into more than a dozen languages and shown all over the world. The 21 episodes have been divided into 3 series which are now available on DVD. The pilot episode is also available on DVD.