Instruct: Classify Amazon reviews into positive or negative sentiment
Query: "Come to Papa."

Despite its suggestive title, this is actually a mystery/thriller and a very good one. Richard and Priscilla are a happily-married couple who have new neighbors, Eddy and Kay. Eddy is a bit unscrupulous and a little strange, yet he works very hard to establish a tight friendship with Richard. Richard is shocked when Eddy suggests a wife-swap, but later thinks it might be fun.The first half is a rather typical suburban-marriage story, but before you know it, BAM! It turns into a scary murder story with twists and turns that kept me on the edge of my seat. Kevin Kline gives a strong performance as mild-mannered Richard who thinks the grass is greener next door, but Kevin Spacey steals the show, as usual. He plays overly-friendly Eddy, gradually becoming the kind of raving psychopath that Spacey plays so well.There are many plot holes that make the story more than a little far-fetched, but still I enjoyed it and recommend it for those who like thrillers.