The actress explained that Emily's limits will be tested as the series progresses.
"She's not in the business of killing," VanCamp told E! Online.
"I think what's difficult for her is no plan goes exactly as you think it will and she [will] end up hurting people around her that she doesn't want to. That is going to be quite the challenge for her - where do you draw the line? I don't think she would actually kill unless she absolutely had to."
VanCamp added that fans should be excited about the next episode, explaining that it will "really blow everyone's mind".
"So many things happen all in that one episode that are going to have to be dealt with over the episodes to come," she teased. "It's going to be amazing."
VanCamp has previously hinted that the instalment will include a "shocking" development in Emily and Daniel's relationship.
Revenge, which recently received a full season order from ABC, airs on Wednesdays at 10/9c.