The first episode I can think of is "Look at the Princess (Part 1)". The crew visit a planet, and it turns out that Crichton is compatible with the princess, and is forced to marry her.

IIRC the Scarrans are involved because they don't want the princess to inherit the thrown, but for her brother to instead.

The first episode I can think of is "Look at the Princess (Part 1)". The crew visit a planet, and it turns out that Crichton is compatible with the princess, and is forced to marry her.

IIRC the Scarrans are involved because they don't want the princess to inherit the throne, but for her brother to instead.