It'll be Hump Day when "Lost" returns to ABC, starting Jan. 21.

The filmed-in-Hawai'i show will premiere on a Wednesday, returning to its original night after being a Thursday fixture. And expect a three-hour block, from 7 p.m., beginning with an hour of clips, followed by two back-to-back new episodes.

Various Web sites today announced the new playdate.

When it eases into its regular time slot, at 8 p.m. here, it will play opposite a new Fox TV drama, "Lie to Me," which will have a lead-in advantage following "American Idol," always a January-February heavy-hitter.

The return of "Lost" to the Wednesday lineup means that ABC's "Private Practice" will be bumped to another slot, another day.