Grimm: Season 1, Episode 18

Cat and Mouse (20 Apr. 2012)

TV Episode  |  TV-14  |   |  Drama, Fantasy, Horror
Your rating:
    1 2 3 4 5 6 7 8 9 10 -/10 X  
Ratings: 8.7/10 from 545 users  
Reviews: 1 user | 1 critic

Nick investigates the failed attempt to murder feral Ian Harmon, who seeks help from ex-lover Rosalee, who brings in Monroe, who turns to Nick. He finds the feral hit-man Edgar Waltz is a ... See full summary »


(as Felix Alcala)


(created by), (created by), 2 more credits »
0Check in

Watch Now

$0.00 with Prime Video


Celebrate IMDb's 25th Anniversary with Photos We Love

IMDb turns 25 on October 17! To celebrate, we put together a gallery of some of our favorite movie, TV, and event photos from the last 25 years.

See the Photos We Love

User Lists

Related lists from IMDb users

a list of 48 titles
created 01 Nov 2012
a list of 570 titles
created 03 Jan 2014
a list of 22 titles
created 12 Jul 2014
a list of 25 images
created 8 months ago
a list of 46 titles
created 7 months ago

Related Items

Search for "Cat and Mouse" on

Connect with IMDb

Share this Rating

Title: Cat and Mouse (20 Apr 2012)

Cat and Mouse (20 Apr 2012) on IMDb 8.7/10

Want to share IMDb's rating on your own site? Use the HTML below.

Take The Quiz!

Test your knowledge of Grimm.
« Previous Episode | 18 of 96 Episodes | Next Episode »





Episode cast overview, first billed only:
Edgar Waltz
Ian Harmon
Don Burns ...
Melvin (as Don Stewart Burns)
Lorren Snow ...
Drunk #1
Jesse Frola ...
Drunk #2
Edgar Reynolds ...
Spanish Captain


Nick investigates the failed attempt to murder feral Ian Harmon, who seeks help from ex-lover Rosalee, who brings in Monroe, who turns to Nick. He finds the feral hit-man Edgar Waltz is a Hundjäger ('canine hunter'), a ruthless breed used by the seven competing royal families, who demands police captain Renard's help. Waltz stops at nothing, threatening with city-wide slaughter and kidnapping Rosalee to get his prey, but Nick, Ian and Monroe still fight back, for once overruling human law. Written by KGF Vissers

Plot Summary | Add Synopsis





Release Date:

20 April 2012 (USA)  »

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

16:9 HD
See  »

Did You Know?


The opening quote and some loose plot points come from the fairytale "Iron Hans". See more »


Ian Harmon: Are you always this animated?
Monroe: Well, you made me miss my yoga.
See more »


Grimm - Intro/Theme
Composed by Richard Marvin
See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Crossing the Line
10 June 2014 | by (Rio de Janeiro, Brazil) – See all my reviews

A man named Ian Hamon is being hunted down by the Verrat's agent Edgar Waltz and is wounded at Portland's bus station by a bullet and loses his backpack. Waltz meets Captain Renard seeking for help to capture Ian but his request is turned down. Meanwhile, Ian, who belongs to the Wesen Resistance, goes to the spice shop and Rosalee, who was his lover in the past, calls Monroe to help her to remove the bullet. Waltz kills a man and leaves Ian's passport in the crime scene to force Renard to chase him. When Nick arrives at the spice shop, he tries to attest Ian, but Rosalee and Monroe testify that he was unconscious with them when the man was murdered. Soon Waltz confronts Nick while Ian needs a new passport to leave the country. Nick has to take a decision and cross the line as a police detective.

"Cat and Mouse" is a good episode of Grimm, especially because of the conflictive situation faced by Grimm. Now his knowledge of the Grimm world interferes with his professional life and it is visible that he does not totally agree with his last attitude. My vote is eight.

Title (Brazil): "Gato e Rato" ("Cat and Mouse")

7 of 7 people found this review helpful.  Was this review helpful to you?

Message Boards

Recent Posts
Nick's baby happy_me516
quotations shown in the beginning SrEditor
Possibly Important (but ignored) Plot Points Luna-Phaedra
Season 5 Promo trailer is here! OtterMom
Just started watching Hazzer182
Trying to Make Sense of Nick x Juliette CQueenC17
Discuss Cat and Mouse (2012) on the IMDb message boards »

Contribute to This Page

Create a character page for: