What is Portsmouth Thriller?

It's close to midnight
Something evil's lurking in the dark
Under the moonlight
You see a sight that almost stops your heart
You try to scream
But terror takes the sound before you make it
You start to freeze
As horror looks you right between the eyes
You're paralyzed
'Cause this is THRILLER!

Join our horde, if you dare. Learn the choreography to Michael Jackson's beloved Thriller and prepare to overrun the City Of Portsmouth.