O/P
So far, whilst they may technically be new documentaries, they are of crashes where documentaries have already been made. The first episode was of the British Midland crash at Kegworth and tonight it is of the Concorde crash.
Am I missing something or are these 'new' episodes just rehashes of old ones?
Yes you are, you are watching repeats.
New Episode list...
https://en.wikipedia.org/wiki/List_o..._15_.282015.29