10 things to expect on the new season of 'Blindspot'

There are a few changes on NBC's "Blindspot" when it returns for its second season on Wednesday at 8 p.m. But the show's creator insists that they're meant to capitalize on what worked during its first season.

"It's a brutal thing, making the first season of a TV show," "Blindspot" creator Martin Gero told Business Insider recently. "You learn a lot of lessons - the hard way, the easy way. So definitely as we went into season two, one of the first things you do is you really want to sit and do a postmortem of 'What did we do great?' and 'What did we struggle with?'"

With that said, Gero said the show will continue to play around with tone and character. New characters will change up relationships and bring other agencies into play. But Gero wants to make sure that fans know the show isn't abandoning the story it's built up.

"We're not reinventing what the show is," he said. "All these things I'm talking about are to augment. It's an augmentation, not a transformation for us."

Coming out of the first season, the Mayfair and Taylor Shaw chapters closed after their confirmed deaths. Jane (Jaimie Alexander) kills her ex-boyfriend Oscar (François Arnaud) during a fight, but not before he tells her that a person named Shepherd has been pulling the strings all this time. Shepherd's first phase ended with getting rid of Mayfair and getting Weller (Sullivan Stapleton) promoted to FBI assistant director. And the second phase was just starting. In the end, Weller arrested Jane.

Here are 10 more things to expect on season two: