Here's a Pretty Little Liars twist we didn't see coming: American Idol star Adam Lambert is going to be on the Season 3 Halloween episode, Season 3, Episode 13: “This Is a Dark Ride,” airing this October.

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According to MTV, Adam is set to perform two songs, and he will have a scene with Lucy Hale (Aria). We don’t know much more than that, but it sure sounds exciting.

Are you excited to see Adam signing on TV again? Let us know in the comments below!

Catch an all-new episode of PLL on Tuesday, July 24 at 8 p.m. ET/PT on ABC Family.

Source: MTV

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Rebecca Martin is an editor at Wetpaint Entertainment. Follow her on Twitter @BeccaMartin47