Conspiracy! One viewer felt that the show was real, that Sarah Greene really died and that the BBC was merely covering their tracks when claiming the show was fiction.

Ghostwatch syndrome? Two young boys were diagnosed with Post-Traumatic Stress by their GPs, which they attributed to watching Ghostwatch. This condition is associated with war veterans.

The viewers that we saw phone in were scripted actors, though the hotline number was real. The lucky few who got through were instantly told 'this programme is fictitious'. Real experts in parapsychology - the study of supernatural - were on board to talk to concerned viewers.

Neighbours at the location weren't tortured by ghosts and ghoulies, but the noisy production crew filming Ghostwatch.

Touch and go. According to Ghostwatch writer Stephen Volk, the BBC almost pulled the programme from transmission the day before its Halloween broadcast date. Given that similar themes in The Exorcist earned it a 25 year UK ban, it's amazing it was shown at all.

Banned? What happened to Ghostwatch after its controversial broadcast? The subsequent outcry saw it subject to a limited publicity and repeat ban. This has long been lifted, though it is highly unlikely to be screened again.

Ghost on screen! The malicious ghost nicknamed 'Pipes' appears almost subliminally in various moments through the broadcast. Most clearly, he is lurking behind two women as Craig Charles approaches interviewee Arthur Lacey outside the house.

Check out our exclusive interview with Ghostwatch scribe Stephen Volk >>