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 after Dr. Bashir finds out that Sloane is traveling with the group, as well.