When an alien parasitically latches onto B'Elanna for survival, the Doctor calls upon a holographic Cardassian doctor for assistance, unaware he's a war criminal, thereby creating an ethical quandary.
An injured cytoplasmic alien attaches itself to Torres, using her body to assist it's injured body. Unsure how to save his patient, The Doctor calls up a holographic recreation of a Cardassian exobiologist to consult. The consult progresses well until Torres refuses treatment when it's made known the Cardassian was guilty of war crimes for tortuous experiments resulting in thousands of Bajoran deaths.—Meribor