And branded upon the beast the mark of his kin. For none shall live whom they have seen.
Nick wakes up on the couch and finds Juliette standing over him. He admits that he got in late because he's been dealing with a case concerning a missing girl and he can't get it out of his mind. Juliette abruptly starts to leave and Nick apologizes, saying he's trying not to be tired of sleeping on the couch. She says that they'll talk about it later and goes.
Adrian Zayne is at home burning photos of the missing girl, Donna Reynolds, and talking to his partner Richard on the phone. He assures Richard that the man who will buy the girl will be there in a day to pay them. There's a knock at the door and the abductor hangs up and answers it. It's Nick and Hank and they ask to come in to talk with him. They show him a photo of the girl and point out that he works maintenance in the same building where the girl was working. While Hank questions Adrian, Nick sees the burning photos and catches a glimpse of Donna's face. Adrian transforms into a Schakal and shoves Nick aside and then runs out the back. Nick catches the Wesen and punches him repeatedly Hank stops him.
The detectives take Adrian to the station and he insists that the photographs were of his ex-girlfriend, Jennifer Benson. Renard watches through the one-way as Wu comes in and calls Hank and Nick out. They meet with the captain, who tells them that forensics has turned up nothing at Adrian's house. Renard warns them that they have nothing and that what Nick saw can't be used. Once Renard and Wu leave, Hank suggests that Nick misidentified the photos and that Adrian ran because he knew Nick was a Grimm.
Hank and Nick release Adrian and take him out. Ryan asks Hank to sign some papers while Nick warns Adrian that it's dangerous to lie to a Grimm. The Wesen backs away, demanding that they get Nick away from him. Renard notices the exchange as Adrian says that if anything happens to him then Nick is the one responsible. Once they're alone, Hank asks Nick what he said and warns that if they push Adrian than he might kill Donna and dump the body. Nick admits that he doesn't know what he's going to do but that he'll do it alone so that Hank doesn't get tagged for it. Nick then goes to the trailer and gets a weapon.
Juliette calls the legal office where Adalind worked, tracing the person who brought the cat that scratched her. Renard calls her and asks if Nick is there, and Juliette says that he hasn't come back yet. The captain says that he's concerned about Nick because he's been on edge recently and Juliette admits that she's noticed the same thing. Renard offers to talk to her about it, figuring that Nick is keeping it inside. Juliette admits that things haven't been easy and Renard offers to meet her the next day for coffee. She agrees and they set a time and place to get together.
Nick goes to see Monroe at the apothecary and has him create a truth serum for Schakals. Monroe says he can do it in a half hour. Later, Nick drives to Adrian's house and breaks in. He searches the place and finds Adrian in the cellar, dead. He's been strung up and a brand burned into his chest. Hank comes down and wonders what his partner has done.
The detectives go outside as Wu arrives and explains that they received a 911 from Adrian, confessing to everything and giving them the girl's location. Hank and Nick say that they got there afterward and show Wu the corpse. Renard calls to inform them that they have Donna and that someone tortured Adrian. Back at the station, the detectives listen to the 911 call and hear Adrian screaming in agony as he confesses. As Ryan comes in with coffee, Hank confirms that they arrived nine minutes after the call was made. Wu invites Ryan to stick around and learn something and they bring up the crime-scene photos. They haven't identified the brand symbol on his chest and Renard says that they should give everything to the press. Franco comes in to tell Renard that the press wants a statement. Once the captain leaves, Nick tells Wu to try and identify the symbol.
Renard tells the press what has happened and that Adrian was murdered in his home after torture. At home, Bud the Wesen is talking to his wife about her mother-in-law and watching the newscast. He sees the symbol and recognizes it.
Monroe is at home watching the newscast and sees the symbol as well. At the station, Nick and Hank work out how to explain why they were there and Hank points out that he went there to keep Nick from shooting Adrian with a crossbow. Monroe calls Nick and says that he knows what the symbol is. Meanwhile, Bud calls as well and tells Nick he knows about the symbol. Nick cuts him off, saying that he's already on it, and assures Bud that he has it under control. Once he hangs up, Bud tells his wife that everything is fine... unless it's the end of the world.
Hank and Nick meet Monroe at his home and the Blutbad explains that it's an ancient Germanic G for "Grimm." The older Wesen spoke of the most violent and ruthless Grimms, the Endezeichen-Grimms. Monroe shows them a book with stories of the Grimms. The Grim Death Squads branded the symbol into any Wesen that they killed. Monroe mentions the Sterbestunde, the "Hour of Death." According to the legends, Grimm death squads tortured and killed Wesen and left the brand mark. They figure that there's another Grimm in town but Monroe doesn't know why he's there and admits that he didn't know they even existed. Hank points out that the Grimm got the information on Donna that they couldn't. Monroe warns that they have to deal with the Grimm quickly before he tarnishes Nick's reputation.
Renard calls one of his spies in Vienna and tells him that they have an Endezeichen in Portland. The man doesn't know if the Family sent him and Renard tells him to find out.
Nick returns home and prepares for another night on the couch. The Grimm calls Nick and says that he's doing what Nick should have done, but figures that there's still hope for him and says that he'll see what happens next time. The Grimm hangs up and then watches video that he took of his torture of Adrian.
When Nick arrives at the station the next day, Hank and the other officers show him the video. The Grimm uploaded it to the Internet and they figure the killer isn't shy about his work. As Nick and Hank go to question Donna, Nick tells Hank about the call and they realize that it's not good that the man knows who Nick is. They go to the Reynolds home and confirm that the parents were at church praying for a miracle. Donna describes how Adrian abducted her and confirms that there was a second man driving the van for Adrian. The detectives check the security footage from Donna's building and find one van that drove away at the time of her abduction. It's registered to Richard Tyler Berna and Renard tells them to find the man.
Berna is leaving his home when the police arrive and arrest him. When Berna sees Nick, the Wesen realizes that he's a Grimm and shouts that Nick killed Adrian and now he's going to kill him. They take him to the station and everyone watches as the detectives take him to an interrogation room.
Juliette meets Renard at the coffee shop and he asks her if she remembers anything about the night she woke up. She doesn't remember anything and Renard talks about how Nick has been distracted. He awkwardly offers to help any way that he can and Juliette thanks him. When she hesitates, Renard encourages her to share and Juliette admits that Nick is a complete stranger to her while he knows everything about her. Renard takes her hand and assures her that what happened isn't her fault. Juliette says that she has to leave and walks away, leaving her sunglasses behind.
Hank and Nick interrogate Berna, who doesn't care what they have against him. He believes that Nick will kill him and demands to talk to a lawyer. The detectives take a break and Wu says that they found something in the van. The forensics tech says that Berna and Adrian left their abduction equipment in the van as well as Donna's purse. As they go back to the interrogation room, Franco asks why they cut Berna loose. They accompany a squad to Berna's house and find him dead, tortured and branded. As Hank and Nick check out the crime scene, the Grimm calls to tell Nick that he let Berna go and that he's more of a Grimm than Nick will ever be.
The detectives return to the station to figure out who let Berna go. Bud arrives to see Nick and tells him that the Eisbibers are worked up about the video. They sent Bud down to find out if Nick knows the Grimm, and the Eisbiber says that none of them want to lose their trust in Nick. As he leaves, Hank and Wu show Nick the footage of the interrogation room. It shows that someone off-camera opened the door and let Berna out. However, Wu picks up a reflection in the door glass that Ryan was the person responsible.
That night, Bud goes home and Ryan approaches him. He jabs Bud with a syringe and knocks him out.
Franco tells Hank and Nick that Ryan was trying to catch up to Bud. They get Ryan's address from his personnel file and Hank and Nick break into his home. Ryan's mother is there and says that she has no idea where her son is. She says that they don't get along and that Ryan said he was moving out because he claimed he had important work to do. Hank checks out Ryan's room and discovers that it's filled with newspaper clippings of all of Nick's cases. Nick calls Bud's home and confirms that he was working late at the shop.
At Bud's repair shop, a masked Ryan heats up his brand and hangs Bud up from the ceiling while recording everything on video. Ryan says that Nick should have killed Bud and the Eisbiber insists that Nick is a friend. He suggests that Ryan talk it over with Nick, but Ryan says that Nick is a traitor to his own kind. Hank and Nick arrive and break in, and Ryan runs out the back. Nick gives chase and finally captures him. Ryan says that he looked up to Nick and hoped that they could work together. He insists that he's better than Nick and cleaning up his messes. He transforms into a lamprey-like Lebensauger and insists that he's a Grimm and that all Wesen must die. Ryan begs Nick to kill him and advances on him, and Nick knocks him down and handcuffs him.
As Wu takes Ryan away, Bud thanks Hank and Nick for saving his life. He hugs them and goes to call his wife to assure her that he's okay. Once they're alone, Nick tells Hank that he doesn't know what Ryan is but it's not what Ryan wants to be.
Renard visits Juliette at home to return her sunglasses. She apologizes for running out on him earlier and Renard starts to go, but then steps in and kisses her. Juliette kisses him back and remembers that Renard was the one who woke her at the hospital. He tries to kiss her again but Juliette backs away and closes the door.