The Revenge Killing

S1 E6: In 2009 An English Village Was The Scene Of A Brutal Murder Police Were Baffled As To Why Someone Would Want To Kill This Man Apart From A Partial Footprint The Crime Scene Was Clear Of All Forensic Evidence Could The Perpetrators Have Committed An Almost Perfect Murder Detectives Were Determined To Catch The Killers And For Five Months They Scoured The Country For Even The Tiniest Clue