Glee, Jessalyn Gilsig Glee, Jessalyn Gilsig

When Glee mania exploded last season, Jessalyn Gilsig was shut out of the celebration. Gilsig's manipulative Terri Schuester was so reviled by fans that the show writers quickly wrapped the conniving character's fake pregnancy story line and sent her packing. There was talk of rebound romance — first with Finn (Cory Monteith), then later with rival glee director Dustin (Cheyenne Jackson) — but neither materialized. Adding salt to her wounds: Just as Will and Terri's marriage was crumbling, Gilsig was privately going through a divorce of her own.

"Glee was bittersweet for me," confides Gilsig. "As grateful as I was for the work, life was not going very well." But now Terri is finally being invited to join the party — thanks to the latest diabolical scheme of Sue Sylvester (Jane Lynch). "I form this Legion of Doom to destroy Glee club, and Terri's a part of it," says Lynch. Adds Matthew Morrison, Gilsig's on-screen ex, "It's going to be a tough week for Will when all my nemeses come together to crush me."

While Terri may not prove much of a threat initially, Gilsig promises the worst is yet to come. "Terri tells Sue her approach isn't working and it's time to rewrite the playbook," says Gilsig, who was thrilled to hear that she'll play a big role in this season's remaining episodes — and will appear in as many as 22 next year. "It was hard during that long stretch, but I've finally found a balance in my life," she says. "I'm so happy to be back."

Additional reporting by Carita Rizzo

Glee airs Tuesdays at 8/7c on Fox.

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