B’Elanna is attacked by a non-humanoid alien creature and her life is danger. Doctor creates a holographic representation of a famous Cardasssian exobiologist, Crell Moset, to help save her life. It is soon revealed that the Cardassian scientist used to experiment Bajorans during their occupation. Impressions A breathtaking episode. This is what I call SciFi - to use made up, fantastic setting in order to tell story about humanity. Episodes like this make Star Trek my favorite western SciFi.