作词 : Bacon, Hackett, Howe I hear thunder from the mountain Trying to split my personality I see burning on the hillside Darkness 'til the break of day The wind that blows, a Dog that bites Recurring dreams another night Underground through the marshes Got to keep the hounds at bay, I know Can't move, my feet are frozen There's a pounding in my head The horn that sounds, I'm through the door My body's trembling, turn on the light CHORUS Is the mirror lying? I must decide If I'm Doctor Jekyll Or Mr. Hyde CHORUS CHORUS CHORUS