Changes by Henry Burrows:
- Introduced the well-known concept of reanimation. Basically anyone killed by a Zombie comes back to life as a Zombie themselves. This is mentioned by Kate near the beginning to explain some of the events later in the film.
- Renamed "Paulie" as Tony.
- Made the Priest a little more "dithering" by having him fumble his crucifix and lose his life through incompetence.
- Enhanced Bob's plea to the Zombie as this is a central speech which the entire plot depends on. We've got to believe that he could talk a Zombie out of doing what it does best.
- Made the ending much stronger by tying up all loose ends and characters (we must known what happens to Angie and Tony particularly, as well as the dead priest).
- Added two more Zombies, otherwise it might as well have been called Sunday Night Zombie.
- Added some more action at the wedding to give it another twist and a final punch.
Changes by Howell Parry:
- Merged the two scenes of Tony on the phone and tightened them up, hence introducing the Zombie earlier (Zombies are the key element to the film).
- Turned Angie into a Zombie in the wedding scene so she can be the one that takes the bullets intended for Bob.
- Made the Priest more dithering by having him read the wrong service initially.
- Corrected some of the Priest's speeches to make them more authentic.
Changes by Stephen Davis:
- Introduced Tony earlier to the wedding scenes.
- The Zombie conversion scene.