After two great seasons, Andromeda seems to take a turn for the worse. This is a particularly bad episode, with holes in the plot so large you could drive, well, Andromeda through.
When the crew saves a group of mentally unstable prisoners, they are allowed to practically take over the ship without anyone so much as protesting (why does Dylan let unstable people walk all over the ship? Why doesn't he try to confine them to quarters or throw them to the brig or something when they are obviously a threat? And why does the only way the Andromeda crew seems to be able to fight is with their fists? Haven't they got stun-guns or something similar in their century?).
The episode then takes one more bizarre twist, with some Mengele-type doctor masquerading as a prisoner, then being found out, then turning into some sort of informer for the Commonwealth, then unexpectedly dying from some unidentified disease. The whole plot looks contrived, the twists are non-sensical and the episode reminds one of a particularly annoying dream that just doesn't make any sense when one wakes up.
Matt Kiene and Joe Reinkemeyer have given us a number of excellent Andromeda shows ("Double Helix" being the best example), but this simply isn't one of them. Dylan, in particular, is increasingly made into a spineless caricature of Hercules, and if a character can "un-develop", then this is what happens in this episode.