Grip of the StranglerBBC Two Duration: 1 hour, 16 minutesFirst broadcast: Sat 24th May 2008, 03:00 on BBC Two EnglandLatest broadcast: Sat 24th May 2008, 03:00 on BBC Two Northern IrelandA mystery writer investigates the case of a murderer hanged twenty years before.ContributorsActor:Boris KarloffDirector:Robert DayActor:Elizabeth AllanActor:Anthony DawsonGenresDramaHorror & SupernaturalFormatsFilms Source: BBC Online