A Grate on a Grave

A frightful night, even spiteful night
 Where footsteps hurry fretfully on grounds where the lifeless lie
 "Be quiet! Lest we attract attention of the keeper's eyes!"
 Two figures hunching low, digging through the soil
 Of the cemetery. In grim pursuit, uncovering it's spoils
 Through mud and rotting wood, the stench of cold demise
 For silver studs or golden teeth for their morbid enterprise
 A sudden noise, a sullen voice
 In shock they hear it beg
 Believe me
 Please help me
 I did not mean to touch then tear apart
 A grate on a grave!
 As if to keep their likes away
 But who pled to them so miserably?
 And left their faculties in disarray...
 Shaken to the bone they peek
 To find a tomb, quite new and neat
 Richly adorned as if to speak
 "Come hither! take whither!"
 Gathering their senses, fueled by curiosity
 Not even solid metal bars diminish their greed
 And they dismantle it
 A sudden noise, a sullen voice
 Again they hear it beg
 Release me
 Set me free
 I did not mean to maim and eat the heart
 Someone's buried here, alive! How can it be? Where they revived?
 Craving riches, wit-deprived they dig deeper and deeper
 Shovels hitting solid stone, black marble coffin, like charcoaled bone
 Can barely move the lid alone, the scent of death grows sweeter
 Air...
 Light...
 Moon...
 Night...
 Warmth...
 Blood...
 Taste...
 FLESH!
 Madness grips them, stops the heart
 The lid cracks open, breaks apart
 Screaming, scrambling, up they start
 Out of this hellish hole
 But something rises from the pit
 Hunger and hate, so full of it
 Bone breaking snap, a fatal hit
 Another hearty meal is served
 A frightful night, even spiteful night
 Where corpses lie with open ribs on grounds were the undead rise
 "ARISE! The lord of all unliving things commands you back to life!
 "ALIVE! Yes, we return to take the world by black surprise!"