Renard (Sasha Roiz) is pronounced dead when a woman (Louise Lombard) enters the room and uses her powers to freeze time.
In Vienna, Prince Viktor (Alexis Denisof) is told by Rispoli (Philip Anthony-Rodriguez) that Steward's accounts have been hidden to avoid their involvement with him and he is also informed that Adalind (Claire Coffee) has arrived.
She contacts Nick (David Giuntoli) and Hank (Russell Hornsby) to tell them what she knows before returning to watch him.
In the spice shop, Monroe (Silas Weir Mitchell) and Rosalee (Bree Turner) are investigating a possible "Verfluchte Zwillingsschwester", a spell used by Hexenbiests to remove the powers of a Grimm.
A man named Ken Vickers (Andrew Stearns) calls Slocombe to meet up with him, not knowing he's dead.
Lawrence calls Kent back to meet with him to discuss Slocombe's research and makes a change of his physical appearance before leaving the hotel.
The next morning, Trubel (who is in an excited mood) leaves the house on Juliette's (Bitsie Tulloch) bike just as Wu (Reggie Lee) visits Nick.
I suspect this is one of those slow-burn, long-term plot threads that will only really be fully revealed over the long haul, but I doubt she has friendly intentions overall.
"[4] MaryAnn Sleasman from TV.com, wrote, "'Octopus Head' brought back Renard and locked Adalind up in a spooky dungeon while also continuing Season 4's apparent domesticity theme with the Nick-Juliette-Trubel stuff.
It's an interesting role reversal to pit our Wesen characters against the big bad while our Grimm mostly struggles with more mundane problems like relationships and stray children and the challenge of maintaining a true work/life balance.
"[5] Christine Horton of Den of Geek wrote, "There was a continuation of last week's Wesen storyline about the Octo-man, but it really felt secondary to the developing plot lines among the main characters – although it strengthened Trubel's new position as the only crime fighting Grimm in town.
I look forward to the next episode, particularly after this installment ended on a cliff-hanger that I think will prompt some a number of truths to be revealed next week.