Exile. In 2368, Garak somehow betrayed Tain, and Tain ordered him killed. ... He was exiled when Elim turned him in to the authorities. Garak also said that he was exiled after being framed by his best friend Elim with evidence that a member of the Obsidian Order was allowing Bajoran prisoners to escape.

What happened between Garak and Dukat?

Garak became a close friend of Dukat's father, learned everything he needed to, then turned him in. Later, Garak was required to interrogate Dukat's father, but Dukat's father resisted and Garak ended up killing him. That's why Dukat hates Garak.

Why does Gul Dukat hate garak?

Character overview. Garak has a long-standing antagonistic relationship with the prefect of Bajor, Gul Dukat. In the episode "Civil Defense", Dukat states that it was a mistake for his father to have once trusted Garak and later in "For the Cause", it is revealed that Garak had Dukat's father tortured and killed.