So, a mystery alien appears and gives Archer and gang another piece of the Xindi puzzle to 
solve. Overall, not bad, but not great either. Through interrogating a dying alien and 
poking around the mystery ship, they begin to uncover bit by bit the much larger picture 
of the Delphi Expanse phenomenon. That was a good plot twist on the Alien. At first, 
one thought that he merely a lab rat in a grande experiment, but at the end his 
intentions were anything but naive. This main story line was useful for the Xindi 
saga.

One also sees Reed vs. MACO come head-to-head. The training scenes were a good lead in 
and served as a good build up for tensions. Read, of course, feels threatened by their 
presence in that it undermines his authority. Hayes and Reed finally "go at it". 
Although this plot picks up the "turf" issue presented at the beginning of the Xindi arc, 
there should have been more lead in and story development on this topic in previous episodes. The timing of this plot may be right in the overall Xindi arc, but it did seem to be a bit too 
sudden for one episode to deal with.

Then there is the subplot that puts this entire episode in the toilet, too which the 
standards for Star Trek drama have now sunk to an all time low. T'Pol and Trip have sex. 
And not much drama to speak of either. Whose dumb-ass idea was this anyway? The whole 
build up of the final sex scene was very dry and lame. At least there could have been a 
semi-legitimate love scene to go along with this. All the viewer got to see was 
adolescent sex acting (at best). It was a very poor attempt at "sexing-up" the show. 
That's what daytime soap operas are for. It's kind of been confusing as to which 
direction the T'Pol love thing is going. One episode, it's Archer and the next it's Trip 
and no continuity between the different plots. It has been a very inconsistent character 
development for T'Pol. And besides, even your mediocre Trek-fan knows that Vulcans kiss with their fingers.