It’s November 2013, and Mark Zuckerberg is about to make Evan Spiegel and Bobby Murphy an offer he thinks they can't refuse. But when Spiegel and Murphy do the unimaginable, it prompts Facebook to compete — by copying.

Snapchat is gathering steam, but data leaks are hurting the company's credibility and Spiegel's reputation. To survive, they're going to have to do the hardest thing for a startup — grow up.

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