Marion Co writes: "After the first massacre in 1974, the town suspected that the Sawyer family were accountable. A vigilance man mob of furious locals enclosed the Sawyer house, burning it to the ground and killing all member of the family. Decades later a girl named Heather learns that she has inheritable a Texas estate from her grandparent. she decides to bring her friends on on the road trip to invesitgate her inheritance. On arrival she uncovers she has inheritable a mansion however is nevertheless to uncover the terrors that lurk within the basement below it." Link to Original Source
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"