If there's a sequel, what should the plot be?
The author of the book (and the script) said she's considering to write a sequel and cast is apparently down if that happens. I'm a huge fan of the book and the movie and while the story ended pretty conclusively, I can definitely think of a number of ways the sequel could go.
Namely, Nick is obviously not happy with the forced marriage with Amy. He hates her, and can't see her the same way again after everything she did. So, he and Go try to build a case around her murdering Desi Collins, since that'd be the only way to put her away for good. But of course Amazing Amy is way too conniving to let that be an easy goal for them. Who knows what she'll do next?!
I know, it probably won't be as good as the first one. But if the author decides to write a sequel to the book, I'd read that in a heartbeat. And you bet I'd watch the sequel in theaters opening weekend like I did the first one. It made over $350 million in the box office, so I'm sure the studio would love to make another one.