[Ali Imran]

Zombies are re-animated corpses that have no life nor soul in them. If you take that verse literally it means the Holy dead were ressurected or became alive again, not at all the same as becoming zombies
 I don't find that so unbelieveable at all. There are also bodies of modern day saints who have not been corrupted [see St Pio and St Bernadette]. Even if it was not  described in all the gospels, it doesn't mean it didn't happen [we are talking about ancient times here where news was slow to travel and not everything was recorded ]  plus it wasn't pertinent to the teachings about Christ.

That is the movie version.

In the Gospel version which you believe is the word of God, the holy ones were brought back to life, rose from their graves, and walked to town. People saw them.

God said those to you and you think it is not pertinent. How come?