In a hotel room, Artie tries to handcuff Myka, who insists she can't let him take the artifact. She attacks and knocks him out.
14 hours earlier
At the warehouse, Leena and Artie argue over how he deals with MacPherson. She suggests that Artie let Mrs. Frederic do it while he focuses on his job. Out in the warehouse, Myka and Pete are doing inventory, except Pete has stopped to play table tennis against the Lewis Carroll mirror. Myka realizes what he's doing and tries to warn him it's dangerous, but Pete insists not everything in the warehouse is dangerous. He wonders if she's taking out her frustrations over Artie on him. Myka admits that Artie's past is dangerous and he should have told them about MacPherson.
As they argue, Myka shoves Pete. He knocks over the mirror and they try to grab it. The Studio 54 disco ball falls down and goes off, and Artie realizes something is wrong. As he and Leena go to investigate, Myka tries to hold the mirror up until Pete can help her. Artie and the others arrive and Myka tells him to ask Pete what happened and walks off, seemingly shocked.
Back at the bed & breakfast, Leena tries to talk to Myka about her concerns but Myka appears much more relaxed. Artie calls the agents in to brief them on Gary and Jillian Whitman, petty conmen who are hitting winning streaks in casinos across the country. Claudia comes in to help and Artie isn't too happy to have her there, but Myka intervenes. Artie is sending Pete and Myka to Las Vegas to check it out. As they go, Artie asks Pete if Myka's mad at her. Pete admits she is but thinks the trip to Las Vegas should help her relax. Once they're gone, Artie snaps at Claudia, telling not to get involved with MacPherson in any way, shape, or form.
In Las Vegas, Myka dresses well for the occasion, much to Pete's surprise. She's figured that the Whitmans must have the artifact on them, and it must be a single item. Pete provides her with their ear radios and he ends up with the Farnsworth while Myka has the Tesla gun.
Artie and Claudia put the Studio 54 disco ball back and Artie warns that it projects cravings and encourages a grim attitude against humanity, just like the 70s. He apologizes for snapping at her about MacPherson. They pick the mirror up and start to walk away, but then realize that Myka's image is in the mirror.
In Las Vegas, Jillian and Gary are gambling and Jillian tells Gary that they've got enough money. Gary insists they need as much money as they can so they can settle down. Pete and Myka spot them and Pete goes to search their room while Myka keeps an eye on them.
At the warehouse, Artie and Claudia move the mirror to Artie's office and Leena arrives. Artie thinks that the blast messed up the mirror's reflective capacity and somehow infused Myka's psyche inside of it. He wonders if the image is alive or not and needs Leena to make the determination. Artie holds on to her as Leena reaches out to the mirror. However, she can't get a reading through the glass barrier. Claudia suggests they ask the image but Artie warns it can be dangerous. Leena suggests that they contact Pete.
At the hotel, Pete receives Artie's transmission while Myka listens in on the earpiece. Artie suggests that Pete try to get a vibe for anything out of the ordinary. Pete says everything's good and Artie doesn't go into more detail.
Pete goes to the Whitmans' hotel room and starts searching, while Myka spots Gary holding a gold coin. Pete contacts Myka and says he has nothing, and she says she hasn't found anything either.
At the warehouse, Claudia comes in with a laser mike device she whipped up to communicate with the mirror image. She wonders if the image is the real Myka, somehow trapped. Artie wants to think about it for a minute.
Pete returns to the casino and notices Gary holding his hand. He spots Myka watching from the second floor balcony. She still claims she hasn't seen anything and tells Pete he can rest. He decides they should stay together.
Artie agrees to let Claudia use the laser mike and they make contact. Artie doesn't believe Myka is who she claims but Claudia isn't so sure. However, Artie turns off the laser mike and insists the image won't be leaving the warehouse. He returns to the files on Lewis Carroll and notes that the author was chronicling the insanity of the real Alice. Leena finds a report indicating that somehow Alice became trapped in the mirror right after a series of murders. Artie figures that somehow Alice's spirit has merged with Myka's image, but he's not going to let it get out.
Gary and Jillian go back to their room and Gary insists that they have to keep betting. Pete and Myka follow them. When Jillian comes back toward them, Myka grabs Pete and kisses him as a cover, but secretly pickpockets the Farnsworth. Myka then tells Pete to follow Jillian while she goes after Gary.
At the warehouse, Leena suggests that somehow the disco ball interacted with the mirror. Claudia suggests that Alice and Myka possibly switched places, and Artie remembers that Myka pulls her head to the right when she's angry.
In Las Vegas, Jillian returns to the casino and Pete approaches her. Jillian ignores him and uses the coin to see the future and know where to place her bet.
Artie removes the cloth from the mirror and reestablishes communication. Myka talks about how he refuses to see the things in front of his face, including her. He wants her to say something that only she would know and Myka says that she doesn't trust him and she needs him to tell her the truth. Myka admits that she likes him despite everything and wants him to think the same of her. Artie realizes she's telling the truth and admits he screwed up.
In his hotel room, Gary is packing and holding his hand in pain. There's a knock on the door and he answers it. Myka is there, pretending that she's drunk and come to the wrong room. He immediately sees through her deception so she punches him and warns him he won't get another chance. A few minutes later, Artie calls her on the Farnsworth and tells her that Leena is looking for the ferret and needs to know what its name is. The Alice-Myka doesn't know the name and just tells them to put some food on. She then proceeds with interrogating Gary. At the warehouse, the trio realizes the Alice-Myka is lying, but if she figures out they know, she'll kill Pete.
Pete contacts Jillian and tells her that the artifact is killing her and Gary and she needs to give it up, despite the rush it gives. He points out that it's leaving burns on her hand. She gives it to him and he assures her that he'll put it away for good. However, when he triggers it accidentally, he gets a vision of the future. Jillian understands what he's going through and they watch as his vision comes true.
At the warehouse, Myka suggests that they tell Pete but Artie admits they can't get hold of him. Claudia points out that he's at a hotel.
Jillian explains that they stole the coin from a man who claimed it saved his life in a fire. Pete puts the coin in a neutralizer bag and then hears a page for him on the courtesy phone. Meanwhile, Alice-Myka tells Gary that now it's her time, and with the coin she'll know when people are coming for her. Gary tries to get free but Alice-Myka shoots him with the Tesla gun. Pete comes in a few seconds later. He checks the paralyzed Gary and secret signals him to feign death. He draws on Alice-Myka and reveals he knows who she is, explaining the real Myka would never have kissed him. Alice-Myka notes he's a good kisser and Pete says that Artie hasn't figured out how to release Myka but he soon will. Alice-Myka tells him that nothing comes out of the mirror unless something goes in, and she doesn't plan to go back in. He orders her to turn around toward the hotel mirror, and her real image briefly appears. Pete's distracted and she knocks him down, and then shoots him with the gun. Believing she's killed Pete and Gary, Alice-Myka leaves.
Alice-Myka drives to the warehouse and uses the coin to see her future where she goes into the warehouse and smashes the mirror. She goes in, unaware that Artie, is secretly watching her. Alice-Myka goes to the mirror while Leena and Claudia set up equipment and watches her from the balcony of Artie's office. Alice-Myka gets to the mirror but Pete is there and distracts her with ping-pong bolls. Artie fire a flare and Claudia shoots a laser beam into the disco ball overhead. Alice-Myka is forced back into the mirror and it falls over. When Pete and Artie lift it, the real Myka is revealed. She hugs them both and thanks for them. They cover the mirror over and move it to the Dark Vault. As they start to move it, the cloth briefly falls off, revealing the real Alice trapped in. As they cover it back over, Pete has to explain that he spent the expense money to make a quick trip back to the warehouse.