During the first few weeks of a zombie outbreak, a penniless college grad attempts to fund his refuge by hosting a house party, but his plans are jeopardized when a new acquaintance, turns out to be a serial killer.

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A man provides a refuge that saves his friends from a zombie plague, but one by one they die under mysterious circumstances. One of them is a serial killer.

Or:

A man provides a refuge that saves his friends from a zombie plague, but one by one they die under mysterious circumstances. Their savior is a serial killer.

A man provides a refuge that saves his friends from a zombie plague, but one by one they die under mysterious circumstances. One of them is a serial killer.

Or:

A man provides a refuge that saves his friends from a zombie plague, but one by one they die under mysterious circumstances. Their savior is a serial killer.