Episode 10, "The Phantom Thief"
*****SPOILERS*****
Synopsis: The Elric brothers stop in the town of Aquroya, a tourist town. The police there have been trying to capture an alchemy-using thief named Psiren. The police inspector wants to use Edward’s talents to help capture the thief. Edward stumbles upon the identity of Psiren, a kind nurse who claims to be stealing to save the hospital. However, when he allows her to escape from the police several times, he realizes she’s been scamming him. Angry, he faces off with Psiren and captures her for the police. She gives the brothers a hint about the Philosopher’s Stone: the town of Xenotime, which has been researching it. When they leave town, Alphonse regrets her capture, but shortly after she escapes again.