3x13 Aria & Ezra

ARIA, EMILY, HANNA AND SPENCER'S FUN GETS DERAILED IN A SPECIAL HALLOWEEN EPISODE OF "PRETTY LITTLE LIARS," AIRING TUESDAY, OCTOBER 23RD AT 8:00 PM ET/PT ON ABC FAMILY Adam Lambert Makes A Guest Appearance and Performs All Day Pretty Little Liars Marathon to Air 7:00 AM - 8:00 PM ET/PT Burbank, CA (Sept. 11, 2012) - The Rosewood Halloween Ghost Train is the perfect setting for all of "A's" tricks and treats, in "This Is a Dark Ride," a special Halloween-themed episode of ABC Family's hit original series "Pretty Little Liars," airing Tuesday, October 23rd (8:00 - 9:00 PM ET/PT), as part of ABC Family's "13 Nights of Halloween" programming event. Musical guest star Adam Lambert ("American Idol") performs his songs "Trespassing" and "Cuckoo," from his latest album "Trespassing," during the Halloween festivities. Aria, Emily, Hanna and Spencer 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.