s7e19 “Strange Bedfellows”
Worf has a real knack for this sort of thing.
If the last door is Weyoun 7 (pictured above), then 5 (background) had a mysterious “transport accident” (at the hands of Damar) and 6 (middle ground) was the traitor who died helping Odo.
wait, that was the ending? I could’ve sworn it went on for another season that nobody watched.
https://youtu.be/bnFjAkAs_q4?si=vqO3OD0051wobKw0
for some reason I thought the ending was when they threw granny in the tar pit