Fullmetal Alchemist: Brotherhood - Season 1 Episode 4 An Alchemist's Anguish Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost.
Overview: Ed and Al become interested in biological transmutation after witnessing a chimera in Lior, so Colonel Mustang introduces them to an expert in the field, Shou Tucker, the Life-binding Alchemist. Meanwhile, a serial killer whose targets are only State Alchemists is on the loose in Central.