Continuity mistake: When Sydney is torching the lab you see 6 test tubes labelled with her name shatter and spill. In the next shot the tubes are back on the rack and intact. (00:38:20)
Continuity mistake: At the beginning of the episode Sydney has a fringe. In the next scene she's shown with no fringe.
Answer: Go to abc.com, and then click on the Alias page. There is a summary of every episode.
Jane Doe