Plot

When a polar bear trainer is found dead, Shawn works to prove the bear's innocence.

Open with Lassie (Timothy Omundson) introducing his young and attractive sister Lauren (April Bowlby). She is a film student and will be doing a movie about how crime is solved. Word comes down that a body has been found at the zoo.

On the way Lassie brags to his sister about being a "24/7 crime fighter."

They arrive and immediately is clear Gus (Dulé Hill) is interested in Lauren. There are protestors calling for the bear's freedom. We see polar bear trainer Jasper is dead, fond face-down in the middle of the enclosure. The trainer's fiancé, Deborah, walks up in tears. Lauren is in awe of her brother, who immediately declares the bear responsible but Shawn (James Roday Rodriguez) isn't so sure, telling Lauren's camera the bear was "framed."

Woody the Coroner () goes to the Psych office, well aware they must have the bear. Before she can call the information Shawn convinces her to look in the bear's eyes. She begins to realize the bear isn't a killer just as a tranquilizer dart hits him in the leg. Lassie's search team has finally caught the bear.

Shawn and Gus visit the bear in its cell at the zoo. Sinclair shows up and tells them the insurance policy wouldn't kick-in if the bear was euthanized. While they discuss what to do, Shawn spots a remote heart monitor around the bear.

Shawn brings the county's director of animal control (Michael Gross) into the station. Gus explains that based on the heart monitor's information, the bear was completely asleep during the five-hour window in which the trainer was killed. The bear is granted a 12-hour stay of execution.

Lauren is disappointed with Lassie becaue he seems to have discounted Shawn's lead because he didn't come up with it. His methods of using evidence he's collected seems a bit dry to her. She leaves him just as Lassie spots a piece of evidence.

Shawn and Gus interview the trainer's neighbor. He says he would hear Jasper and Deborah argue and the night of his death it got pretty heated. Deborah was jealous of a "her," which Shawn realizes was the bear. Jasper was spending too much time with the bear.

The arrive at the fiancés house, only too late. Lassie's beaten them to it and leads her away in cuffs.

Lassie brought her in based on a shirt of Deborah's he found with blood on it. Shawn quickly figures out the blood is hers, the result of gardening. Lauren is once again unimpressed with her older brother.

Outside, Lauren starts deleting footage of Lassie in disgust. Shawn notices clips from the neighbor interview and gets an idea. He compares the fence in her video with one from a picture found at Jasper's house.

At the neighbor's house, he starts motioning towards the fence between the properties. He intentionally lets Lassie catch-up and allows him the glory of figuring out what happened. There was a dispute between the trainer and his neighbor over the property line. The neighbor strangled him during a debate and planted the body at the zoo. Luaren once again sees her brother as a superhero.