Star Trek: Deep Space Nine Season 7 Episode 16

While making plans to attend a medical conference on the Romulan home world, Dr. Bashir is contacted by Sloane of Section 31 and recruited to determine the health of a high-ranking Romulan official. Things turn more desperate though, when the ranking Starfleet admiral traveling with him, who knows about Section 31’s interest in the conference mysteriously suffers a brain aneurysm. Dr. Bashir’s curiosity is peaked when he finds out Sloane is traveling with the group as well.