Lost alum Rebecca Mader (Charlotte) has landed an upcoming guest spot on the final two episodes of Fringe‘s fourth season!

Mader’s character will be Jessica, a “strong, brave woman involved in a case linked to supervillain David Robert Jones,” TV Guide reports. Says executive producer J.H. Wyman:

She will have an emotional connection with Olivia. They may find out they have more in common then they first thought.

EP Jeff Pinkner wouldn’t answer whether or not Jessica will be a love interest for Peter or if she could return for a fifth season. He said to TV Guide:

To answer those questions would reveal a little too much. The finale in many ways is our characters’ final battle.

Lost‘s Henry Ian Cusick is also set to guest star on an upcoming episode. Are you glad to see another Lost actor on Fringe?