[ENT] Season 3, Episode 20: The Forgotten
This episode does a good job of dealing with the recent losses that Enterprise has faced. It also continues the plot about winning over the Xindi.
–
Read more at Memory Alpha
–
Notes:

Trip hasn’t slept in a while because there’s so much wrong with the ship. Phlox orders him to sleep.

Trip breaks down. He’s been trying to suppress his grief about losing his sister, but writing the letter has brought out his feelings.

Degra wants Archer to present the evidence to the council. He says Enterprise has to fly through a dangerous nebula to get there though.
<Previous Episode——————————————————– Next Episode>