4-09: Our Man Bashir
A transporter mishap converts several crewmembers into spy-themed holosuite characters, with their true memories erased and their lives linked directly to the program.
4-22: To The Death
Sisko and crew assist Weyoun track down a renegade Jem'Hadar group who have located an Iconian gateway.
A survivor found aboard an ancient Bajoran ship claims to be the true Emissary of the Prophets.
4-07: Little Green Men
Quark, Rom, and Nog accidentally transport themselves back to the Roswell Incident on Earth in 1947.