First Details on Grimm’s Double Header Episodes “Cold Blooded” & “Twelve Days of Krampus”

Via NBC, we’ve got some first details on upcoming Grimm double-header “Cold Blooded” and “Twelve Days of Krampus” both of which air Friday Dec. 13 (09:00PM – 11:00PM).

Check out the official Network loglines for both episodes below, and don’t forget to check back with ScreenSpy for images coming soon.

The first episode kicks off Alexis Denisof’s recurring guest star role as Viktor Albert Wilhelm George Beckendorf, the cunning first cousin of Eric Renard (James Frain), while the second explores Rosalee’s first Christmas with Monroe.

RELATED | Grimm Casting News: Angel and Buffy Alum to Spice Up the Renard Family Tree

COLD BLOODED: A CRIME WAVE BREATHES NEW LIFE INTO AN URBAN LEGEND

As a deadly crime spree begins to surface, a century-old urban legend takes shape in Portland’s sewers and becomes Nick’s (David Giuntoli) latest case. In Europe, Adalind (Claire Coffee) meets Prince Viktor (guest star Alexis Denisof) , who’s come to bring those responsible for his cousin Eric’s demise to justice. Meanwhile, Captain Renard (Sasha Roiz) responds to the recent attempt on his life.

Bitsie Tulloch, Russell Hornsby, Silas Weir Mitchell, Reggie Lee and Bree Turner also star.

TWELVE DAYS OF KRAMPUS: A DARK JUSTICE DESCENDS ON PORTLAND AS THE CHRISTMAS SEASON BEGINS

After a string of delinquent teens go missing, an old Wesen tale of an evil Santa who brings more than just a lump of coal may be the prime suspect. The investigation intensifies as Nick (David Giuntoli) and Hank (Russell Hornsby) take things a little too far. Meanwhile, Monroe (Silas Weir Mitchell) enlists Juliet (Bitsie Tulloch) to surprise Rosalee (Bree Turner) for their first Christmas together with unintended results. Elsewhere, Captain Renard’s (Sasha Roiz) tour of Europe brings him closer to tracking down Adalind (Claire Coffee).

Reggie Lee also stars.