'Grimm' season 6 episode 4 spoilers: Diana to change her ways? Breaks 'interesting' news to Monroe and Rosalee

Nick (David Giuntoli) may no longer be fugitive and the crew may have won the previous round, but the danger is far from over. In fact, the next episode of "Grimm" season 6 will see a new threat rise.

Episode 4 is titled "El Cuegle," which is also the name of the Wesen that Nick and company will have to deal with. This creature poses a bigger threat on Monroe (Silas Weir Mitchell) and Rosalee (Bree Turner).

The group learns in "Grimm" season 6, episode 4 that they are dealing with a Wesen who steals babies. This has them springing into action to avoid Monroe and Rosalee's little one to be the next victim.

The synopsis for "El Cuegle" also teases that Diana (Hannah R. Lloyd) has something "interesting" to say to the couple although there is no way of knowing what it is.

Diana was Nick's savior in the previous episode, having turned him back to his normal self after he copied Renard (Sasha Roiz). The installment also hinted the possibility of the young girl becoming a force of good.

Should Diana's upbringing be handled by the right people, her unimaginable power can bring great help rather than massive destruction. However, Renard explicitly said in "Grimm" season 6, episode 3 that he is raising the little girl.

If Renard knows about Diana's tendency to be on the good side, it could be the reason he chose to keep Diana when he struck a deal with Nick.

Speaking of Renard, "Grimm" season 6, episode 4 will see him reeling from his unexpected visit in the previous episode. Waiting for him at his house was Meisner (Damien Puckler), who, the last time fans saw, was a goner.

It will be interesting to see how this plays out and how it is possible for him to be there. The promotional stills for "El Cuegle" shows that Meisner will still be around.

"Grimm" season 6, episode 4, "El Cuegle," airs Friday, Jan. 27, at 8 p.m. ET on NBC.