Hibernaculum

"" is the seventeenth episode of Season 4 of Grimm and the eighty-third episode overall. It is scheduled to air on April 10, 2015 on NBC.

Press Release
NICK AND HANK ARE ON THE TRAIL OF A CHILLING STRING OF MURDERS - Nick (David Giuntoli) and Hank (Russell Hornsby) are called to investigate a rare Wesen that leaves its victims frozen solid. Meanwhile, Juliette (Bitsie Tulloch) starts to feel that she is losing her humanity as she seeks to get revenge on Adalind (Claire Coffee). Elsewhere, Captain Renard (Sasha Roiz) continues to suffer from mysterious bleeding and visions while Monroe (Silas Weir Mitchell) works toward coming to grips with the Wesenrein incident. Reggie Lee and Bree Turner also star.

Wesen

 * Blutbad
 * Fuchsbau
 * Half-Zauberbiest
 * Hexenbiest

Trivia

 * Hibernaculum is the location chosen by an animal for hibernation.