Hap (Brad William Henke) is having a bad night. First, while trying to work out with a Shake Weight, he shakes it so hard that it flies out the window. Then, when he walks out to retrieve it, his house explodes behind him.

When Nick (David Giuntoli) and Hank (Russell Hornsby) are sent out to investigate, they learn that Hap’s brother died in a similar home explosion a month earlier. Nick soon realizes that Hap is a Blutbad (bad wolf) and is even more surprised when Eddie (Silas Weir Mitchell) turns out to be Hap’s emergency contact. Nick asks Eddie to keep an eye on Hap while they investigate.

Suspicious as to the connection between the two explosions, Nick and Hank visit the arson investigator, Lt. Peter Orson (Daniel Roebuck). Orson insists that both incidents were accidental and that it is pure coincidence that the two brothers were the victims.

Meanwhile, a shadowy figure on a motorcycle shows up on Hap’s property. The figure’s enhanced senses pick up a strange smell before driving off. Later, as Nick pulls up to Eddie’s house, he is attacked by the motorcyclist, who turns out to be Hap’s sister Angelina (Jaime Ray Newman). Angelina is a Blutbad, and she also happens to be Eddie’s ex-girlfriend. Nick begins to suspect her, as she is the beneficiary in the event of Hap’s death.

After Nick leaves, Angelina convinces Eddie to run with her in the park, despite the fact that they are supposed to be protecting her brother. Nick, meanwhile, runs a check on her plates and decides to search her property. He surprises an intruder, who knocks him over and escapes.

The next morning, Eddie and Angelina wake up in the park, covered with blood. Eddie looks around and realizes they feasted on a rabbit sometime during the night. Hap, asleep on Eddie’s couch, wakes to a knock on the door, and when he answers, he is shot down in cold blood.

At first, they suspect Angelina, but suspicion soon turns to Lt. Orson. It seems his two brothers were killed several years ago, and it looks like Angelina was responsible. Now, he is using his knowledge as an arson inspector to exact revenge on her by killing her brothers.

Nick learns that Orson is a pig-like creature called a Bauerschwein and that the Bauerschwein and the Blutbaden have a centuries-old feud. Unfortunately, Angelina has figured out who killed her brothers, and she is on the warpath.

Nick races to Orson’s house, and just as he is preparing to take him in for the murder of Hap and his brother, Angelina shows up, looking for a little payback of her own. Nick is able to keep her from killing Orson using a trick he learned from the Grimm diaries, but Orson then shoots her, and she escapes. Nick arrests Orson, but Angelina has disappeared, and even Eddie doesn’t know where she is.

Points Of Interest

Orson automatically assumes that Nick will be on his side, since Grimms and Bauerschwein have historically worked together. However, Nick is continually demonstrating that he is not interested in following the old rules.

What Worked

This was Eddie’s episode to shine. We saw much more of his character and how he is similar to an addict in recovery. We also learned much more about his backstory.

I love some of the small touches they throw into this show. For instance, when Nick goes to Orson’s house, he finds him taking a mud bath in his bathtub. Orson explains that it’s “a Bauerschwein thing.”

What Didn’t Work

Why were two homicide detectives sent to investigate what initially looked like an accidental home explosion where nobody died?

After the end of the previous episode, I expected Juliette (Bitsie Tulloch) to be a bit more suspicious of Nick. However, no mention was made of this at all. Perhaps these episodes were aired out of order?

Giving Credit Where Credit Is Due

“Grimm” stars David Gluntoli, Russell Hornsby, Bitsie Tulloch and Silas Weir Mitchell. “The Three Bad Wolves” was written by Naren Shankar and Sarah Goldfinger, and was directed by Clark Mathis.

“Grimm” airs Fridays at 9 p.m. ET on NBC.