Adam Lambert: 'Pretty Little Liars' Stills!

Adam Lambert gets downright spooky in these brand new stills from his upcoming guest star spot on Pretty Little Liars!

The 30-year-old entertainer was joined for his scenes by PLL starlet Lucy Hale, who was dressed like a traditional 1920s flapper girl for the Halloween ep!

Here’s a synopsis of the ep, “This Is A Dark Ride,” where a character is supposedly killed off! “In the episode, Aria (Hale), Emily (Shay Mitchell), Hanna (Ashley Benson) and Spencer (Troian Bellisario) are looking forward to some good old Halloween fun now that the traumatic events with Nate are behind them.

But once aboard the Rosewood Ghost Train, the girls are in for much more than just some childish trick or treats. With “A” running amuck and unexpected party-goers popping up at every turn, this Halloween event becomes one killer party.”

Be sure to tune in to the episode on Tuesday (October 23rd) at 8PM ET/PT on ABC Family.

20+ Adam Lambert Pretty Little Liars stills inside…