While initially skeptical, Sam and Dean confirm Adam's identity through their father's journal and various "tests" (holy water and silver).
Dean is infuriated to learn John gave Adam a "normal" life—taking him to baseball games and teaching him poker—while he and Sam were raised as hunters. Watch www xrysoi se Supernatural S04E19
After a brutal confrontation where Dean kills the ghouls, the brothers give the real Adam a hunter's funeral pyre, officially acknowledging him as a Winchester. Key Episode Facts While initially skeptical, Sam and Dean confirm Adam's