S01E42: The Signs of Time

Before visiting Goodwin, Mina shows Akiza the true nature of the Arcadia Movement, showing how they performed experiments on young children in order to raise Psychic Duelists. Yusei, Jack, Akiza, Luna and Leo go to Goodwin in order to get the truth. Goodwin almost denies Leo entry, since he is not a Signer, but Luna insists that he stay with them.