“In Heaven Now Are Three” is episode sixteen of season two of Andromeda.
Beka is leaving on a trip to recover something called the Engine of Creation, supposedly a very powerful item that can rearrange space and time. She needs two people to accompany her. Future Trance tells her that if Tyr goes, he will die, so she takes Dylan instead – Rev Bem is still absent and Harper and Rommie are off on a trip. Another episode with much of the cast missing.
They aren’t the only people looking for it, and the planet is covered in traps.
A bit of an odd episode all told. Even for a series that has more than a few.