WARNING: Embargoed for publication until 00:00:01 on 01/12/2016 – Programme Name: To Walk Invisible – TX: n/a – Episode: To Walk Invisible (No. n/a) – Picture Shows: Branwell Bronte and John Brown. Branwell Bronte (ADAM NAGAITIS), John Brown (MARK FROST) – (C) BBC – Photographer: Matt Squire