Board Thread:The Panopticon/@comment-1293767-20151029072618/@comment-188432-20151112021318

Please describe the conditions under which something could be labelled as "to be continued", but not actually continued in a second part.

Also, please describe how the "must be written by the same writer" thing would work? Are you seriously suggesting that The Zygon Inversion is not the second part of The Zygon Invasion simply because Moffat gets a co-writing credit only on Inversion?