Board Thread:Episode Discussion/@comment-33188476-20160418143457

"Diana has returned, but instead of having the family reunion Renard and Adalind had hoped for, their daughter will be used as a pivotal part of Black Claw's plan to take over the government. "[Diana] is still this source of tremendous power that we just don't know. She'll prove to be an asset moving forward," star Sasha Roiz says. Renard will also need Adalind's help to control Diana, which will put all of them in the center of the war between Black Claw and Hadrian's Wall, as Nick and the Scooby gang try to prevent a global wesen uprising."

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Not sure if it's specifically the finale or just for the last few episodes. 