'The 100' season 4 episode 4 spoilers: Abby continues to search for answers; showrunner hints 'big conflict' and Clarke's 'interesting journey'

Abby (Paige Turco) will stop at nothing to find answers on the upcoming episode of "The 100" season 4.

Titled "A Lie Guarded," next week's episode will see the situation in Arkadia and Polis get worse. According to the official synopsis, the survivors in Arkadia and Polis continue to struggle with trust and leadership, leading to more violence in the area. Meanwhile, Abby leads the team to a far location in an effort to find answers.

Wednesday's hour saw the group figure out that they must find a solution in two months, thanks to Raven's (Lindsey Morgan) calculations. It turns out that Luna (Nadia Hilker) and her poison-resistant blood could be the key to saving everyone. The episode also took a surprising turn when it was revealed that Indra (Adina Porter) has a daughter.

Showrunner Jason Rothenberg recently spoke with Entertainment Weekly to discuss the episode, and he teased that a bigger conflict awaits the characters as their search for a solution continues.

"This season, saving your people is not enough. This season, the big conflict is between someone like Jaha — who is driven to save his people at the exclusion of all other people — vs. Clarke — who really has transcended her tribalism and now looks at everybody as one people," Rothenberg said.

As the group's leader, Clarke's (Eliza Taylor) major struggle this season is making life and death decisions. She didn't choose to be where she is now, and Rothenberg hints that her role will begin to weigh in on her in the episodes to come. He also shared that Clarke will have an "interesting journey" as the show moves forward.

"She's a pretty sharp cookie in terms of being able to figure out the right choice. [But] this season we will see it weighing on her for sure. It's an interesting journey for Clarke," he continued. "There are some scenes down field in later episodes where we really see the weight of it on her," the showrunner added.

The fourth season of "The 100" airs every Wednesday night at 9 p.m. ET on The CW.