Nick, Juliette, Hank, and Trubel went straight to Nick and Juliette's home from Monroe and Rosalee's wedding after Trubel told them that Captain Renard was shot, despite everyone being in shock that Nick lost his Grimm powers. The FBI got involved because Trubel killed Renard's shooter, Weston Steward, who was a former FBI agent. Trubel was questioned by the FBI, but she was cleared of any charges as they determined she killed Steward in self-defense. One FBI agent, Agent Chavez, figured out that Trubel was a Grimm and kidnapped her to inform her about people who find what she is and what she can do very important, and that they would be very interested in her services.
