An episode that seems to be dividing reviewers. And, in my opinion, they are all right.

The reviewers who comment that a sense of fun and humour is missing are right. This is a character examination of Isaac and the effect of his presence as an enemy species and also a turncoat who saved hundreds of lives. It does feel darker. Whether The Union would continue to allow such an intelligence source to serve or not is moot. For the purposes of this show he does.

Some reviewers have commented on the treatment of suicide in the show. It is hard to believe that the showtunners did not seek advice. My view is that Penny Jerard did a great job as Dr Finn when she explained about confusing the present with the future. I won't say more because this is a review, but one sentence was both obvious and groundbreakinly enlightening.

The acting was good, as always. The effects very nice although a little long winded. The story of inter crew tension could have been diluted into an arc.