Its first season will draw to an epic finish tomorrow night in the UK, with a second on the way – and star Michael Weatherly has hinted at changes when Bull returns.

Speaking to Digital Spy, Weatherly – who plays Dr Jason Bull in the series about a “Trial science” expert who plays the legal system – told us to expect more of a shift from plot to character.

The changes, he said, will be led by Glenn Gordon Caron, who will replace series creator Paul Attanasio as showrunner for the new episodes.

“It was Paul’s pedigree that really got me initially,” Weatherly said of Bull’s appeal.

“Paul worked on the show House with Hugh Laurie and I think House is a great example of what Bull can be – the maverick outsider with a special insight into people. He finds the solution no-one else sees.”That was what Paul Attanasio brought to the table and Rodrigo Garcia, who directed the pilot, came from In Treatment, which was this great show with Gabriel Byrne, which was also about therapy and understanding people’s behaviour and motivations.

Weatherly hinted that viewers might see some tonal changes starting to take effect in the final episodes of Bull’s first season.

“Glenn did come in and contribute to the last three episodes. So there were some music choices that were bold, and the editing pattern changed a little bit. These are subtle nuanced changes, but they add up because it’s tonal.”

Change is good and all, but we hope Bull doesn’t look totally different next year.