Unfortunately for Ezri, Julian's hearing is better your average Terran by a rather large margin. He's starting to make connections, the sinking feeling he has about what was happening increasing more and more every moment. Her apologizing doesn't help.

The neurochemical indications of being Joined are there, which only serves to further solidify the theory Julian has--one he doesn't like in the least.

He freezes when the tricorder's DNA scan reveals the symbiont, not it's name but it's genetic signature just as unique. "...Dax?"