Crichton agrees to help Scorpius with his wormhole project, so the crew of Moya board Scorpius’ command carrier.

To ensure that neither side harms the other, Crichton and Scorpius wear I-Yensch bracelets (a set of bracelets which wirelessly transmit neuronal impulses).

Wearing the bracelet thus deters Scorpius from attempting to torture or kill Crichton, as Scorpius will then suffer the same fate.

The death of the Leviathan hybrid.

An interview with the actor who plays Scorpius:

In sleep he sang to me, in dreams he came
That voice which calls to me and speaks my name
And do I dream again? For now I find
The Phantom of the Opera is there inside my mind.

Sing once again with me our strange duet
My power over you grows stronger yet
And though you turn from me to glance behind
The Phantom of the Opera is there inside your mind.

Those who have seen your face draw back in fear
I am the mask you wear – it’s me they hear.

Your spirit and my voice in one combined
The Phantom of the Opera is there inside my mind

The Phantom of the Opera
The Phantom of the Opera

There was a different version of this that I liked more on YouTube, but it’s no longer there. This one is OK, though.