“Deadly Exchange” (*1/2 out of four) was an unusually mean and dull melodrama about a foreign exchange student (Valentina Novokovic) who is taken in by a kindly mother (Lindsay Hartley) and her daughter (Victoria Bonefal) and she soon proceeds to turn their lives upside down as she kills several people they know and tries to insinuate herself inside their household. Anyone who has seen a thriller (especially “Fatal Attraction”) will be miles ahead of this at every turn. This could have easily been spit out of a computer.