Watch S9, EP2: Gavin McGuire with Fubo for $0 Today
Teen Mhairi is killed on her walk home after a festive night; investigators trace her last steps, using CCTV and forensics that point to Gavin, a violent repeat offender whose history reveals how dangerous he truly is.
Teen Mhairi is killed on her walk home after a festive night; investigators trace her last steps, using CCTV and forensics that point to Gavin, a violent repeat offender whose history reveals how dangerous he truly is.
More episodes
Britain's Most Evil Killers
S1, EP7 "Stephen Griffiths"A chilling look at Stephen Griffiths, who in 2009 viciously murdered three women.
Britain's Most Evil Killers
S6, EP6 "Pawel Relowicz"Pawel Relowicz rapes and kills 21-year-old Hull student Libby Squire in a case that made headlines around the UK.
Britain's Most Evil Killers
S5, EP1 "Stephen Farrow"A profile of the double-murderer who killed a 77-year-old teacher and a 59-year-old reverend.
Britain's Most Evil Killers
S6, EP3 "Jamie Reynolds"A 23-year-old killer murders 17-year-old former head girl Georgia Williams in 2013.
Britain's Most Evil Killers
S9, EP2 "Gavin McGuire"Teen Mhairi is killed on her walk home after a festive night; investigators trace her last steps, using CCTV and forensics that point to Gavin, a violent repeat offender whose history reveals how dangerous he truly is.
