A Deadly Game of Magic by Joan Lowery Nixon

Four teenage friends - well, teammates anyway - get flooded out of their car on their way home from a tournament. With already sour moods dampened by the storm, they seek shelter in a house occupied by two people who don't really seem like they should be there, and end up leaving the teenagers alone to fend for themselves - against the storm and what appears to be a haunted house. Can they just make it through the night?