Complex sentence: With Chiana on the loose in Moya, Salis is murdered in the confusion: when Durka hears this, he finally reveals his true colours and takes over the ship, as well as taking Rygel and Aeryn hostage.
Split into simpler sentences: With Chiana on the loose on Moya, Salis is murdered in the confusion. When the murder is discovered, Durka reveals his true colours and takes over the ship, as well as taking Rygel and Aeryn hostage.