'Grimm' Season 4 News, Spoilers: Juliette Continues Her Rampage, Wu's Life in Danger

NBC's hit supernatural TV drama series is now closing in on its conclusion for its fourth season but the action and suspense never seem to slow down.

This week's showing of the penultimate episode titled "Headache" will continue to see the manhunt for the vicious serial killer the town knows as the Jack the Ripper copycat. Meanwhile, Juliette's (Bitsie Tulloch) path to vengeance will create more destruction.

A synopsis posted on The Futon Critic indicates that Nick (David Giuntoli) and Hank (Russell Hornsby) are already drawing closer on uncovering the identity of the serial killer. However, their investigation will put Wu's (Reggie Lee) life in grave danger.

Juliette, on her part continues to tread on her plan to exact her revenge on Adalind (Claire Coffee) and this time, she won't be doing it alone. The summary for the upcoming episode mentioned that the ex-veterinarian will forge a "new alliance." Also, Jacqueline Toboni is slated to reprise her role this week as Trubel.

It is still unknown what purpose does Trubel have in returning to Portland. Speculations arise pointing out the probability that she could be there to bring some bad news.

A promotional video released by the network further gave the statement that this week's episode will surely be an exciting one as it shows that "Jack the Ripper" won't be an easy case for Nick and Hank to deal with. The footage also reverberates that level of creepiness as screams of shock and helplessness were heard towards its end.