Written by Ira Steven Behr & Robert Hewitt Wolfe
Directed by David Livingston
Season 4, Episode 10
Production episode 40514-483
Original air date: January 1, 1996
Station log: Dax and Sisko observe the wormhole opening and closing at random. No one has any idea why, though many Bajorans think it a message from the Prophets. (Sisko dryly notes that the Prophets didn’t tell him, and Dax jokes that maybe they don’t recognize him with the beard.)
Worf summons Sisko to Ops, who then summons Odo. Starfleet Security forwarded footage from a secret conference at Antwerp on Earth between the Federation and the Romulans (there was also a Tholian observer), which was destroyed by a bomb, killing 27 people. The footage they sent DS9 includes indications of a changeling disguised as a piece of pottery in the conference room—but the examination of the debris indicated no trace of changeling biological matter, so it likely escaped.