Season 4 is generally regarded as the weakest season, due to not being 100% serialized like the other seasons were, yet it had the highest ratings. That's what it says on Wikipedia.
I'm thinking it was due to airing after Lost, another Abrams show, from January to May 2005 on Wednesday nights. Alias had been booted from its original Sunday night timeslot to make way for Desperate Housewives, which Touchstone Television also produced.
You are exactly right. And they made sure to advertise them as Abrams shows back to back
shareI think Lost might have played a part in it but Season 4 was very popular and it wasn't my favourite season but I remember when it was on here in Australia a lot of people were talking about it and the addition of Sydney sister, Nadia in a more prominent role was a very popular decision.
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Fun Fact of the day: There are only 12 more sleeps until Christmas and IMDB should add more Christmas emoticons. 🎅⛄ 🐨