WHAT A FRIGHTFUL NIGHT

Halloween or Hallowe'en, also known as Allhalloween, All Hallows' Eve, or All Saints' Eve, is a celebration observed in many countries on 31 October, the eve of the Western Christian feast of All Hallows' Day. In UK it is on a Sunday this year.  Halloween activities include Trick-or-treating a traditional Halloween custom where children in costumes travel from house to house, asking for treats with the phrase "Trick or treat" Also attending Halloween costume parties, carving pumpkins into jack-o’-lanterns lighting bonfires, visiting haunted attractions. Some adults like to tell scary stories as well as watching horror movies.  Can you complete the puzzle below where all the clues are related to Halloween? When you have finished the whole puzzle, the letters in the shaded squares should reveal  something caused by forces that cannot be explained by science