S1·E14 Demon of the Crimson Eye

The Cheshire Cat is toying with Oz, who responds by making wisecracks. Oz is pulled through the mirror by Jack, and reunited with Gil. Jack asks Oz to help save Alice, who has been trapped inside a memory. Jack sends Oz by himself (upsetting Gil) into the memory of the Tragedy of Sabrie, where he sees a boy which he believes to be Vincent. Bewildered, he chases the boy and follows him to a tower where he finds Alice, dead. Meanwhile, the Cheshire Cat approaches Break within the mirror to finish him off, only to have the tables turned when Break opens his missing eye to unleash his chain, the Mad Hatter.