Cynthia Watros, best known for her Emmy-winning stint on "Guiding Light," has joined the cast of ABC's "Lost," according to TV Guide.

She will play Libby, who mysteriously appears on the island. Is she part of a group suspected of being from the tail section of Oceanic Air's Flight 815? Viewers will have to watch the upcoming second season to find out.

The actress won her award for playing "crazy" Annie on the soap. She has previously been recognized for roles on the Fox show "Titus" and ABC's "The Drew Carey Show."

Watros is the latest addition to the regular cast. Michelle Rodriguez, who was seen in last season's final episode, will be back as passenger Ana-Lucia Cortez, and Adewale Akinnuoye-Agbaje will portray a "mysterious man."

"Lost" will begin airing new episodes on Wednesday, September 21, at 9 p.m.