[Keith]

It's a great format, but from a TV production point of view I'm fascinated by the many points where there's the potential for it to 'go wrong'. They cast very well. I know they have contracts etc. but I'm always expecting someone to just blurt it out and take others down with them - which is sort of what happened in the final last year.

I dare say that at the round table between them getting voted for and revealing if they're a faithful/traitor there may be a short break, where someone from the production team reminds them that in their final speech "they must not name others" or similar. There's nothing they can do to stop a traitor voting for another traitor though, which depending on the outcome may hint to others.

I imagine that good casting also has a lot to do with the show working. It allows for a diverse selection of contestants who'll hopefully come across well on TV, as well as selecting an initial two/three of traitors who'll hopefully carry the role well. Also, providing support to the contestants before and during the filming to ensure that none of them have to be removed due to something they've said or done (ala C4 era Big Brother).

I'm guessing the programme's format has to have a certain element of flexibility within it, to allow producers to adapt plans depending upon how things progress. For instance, if they got to just one traitor remaining too early they might opt to get them to 'recruit and then murder'. That way bring it back up to two traitors, without others realising a recruitment had occurred due someone else being 'murdered'.