Shape Shifted

                                    

                                          
            
                          
Isaac Lahey and his father are having dinner and discussing Isaac's grades. There is very obvious tension between them, and Isaac seems to be incredibly fearful. After working very hard to work around the topic Isaac admits that he has a D in chemistry, and Mr. Lahey states that he has to "punish him" by having him clean the kitchen before beginning to push dishes off the table, causing them to shatter on the floor. Isaac immediately jumps up from the table and goes to duck and cover in the corner, suggesting that this has happened before. Mr. Lahey throws a glass at him that this the wall just above his head and shatters, causing a shard of glass to get stuck in his skin just under his eye. When he pulls it out it heals almost immediately, and Isaac runs out of the house, taking his bike. Mr. Lahey follows him in his car, and Jackson, who lives down the street, comments that the Lahey's are freaks.
                          
It begins to pour outside. Mr. Lahey sees Isaac's bike in an alley and gets out of the car, calling his name. He sees a blurry figure without his glasses on, but then it's gone. A reptilian monster rips off the car door before killing him.
                          
Allison is seen sneaking out of her house, finding a message on her car's window that reads "midnight". She heads out to the cliff overlooking the town in the preserve where she meets up with Scott who starts asking about Gerard. Scott tells her that they have to be more careful, and they kiss.
                          
Chris Argent approaches the principal of Beacon Hills High School with a gun, with two bulky men behind him. Victoria Argent brings the principal into the car and electrocutes him with one of their tasers.
                          
Isaac runs into the subway station to find Derek. He tells Derek that his dad is dead, but it wasn't his fault.
                          
At the school the next day, Scott and Stiles are talking about the upcoming full moon. Stiles believes that Scott should still be locked up as a precaution, and he opens his locker where a long length of chain falls out. Coach Bobby Finstock makes a sarcastic comment and Scott senses another Werewolf in the locker room.
                          
Allison and Lydia walk up to the school with Allison giving Lydia a pep talk about being back at school after the incident in the woods. When Lydia walks in everyone stares as predicted, and she pretends to be unaffected.
                          
At lacrosse practice, Scott plays goalie in hopes of getting the players one on one. He decides to tackle them all and then sniff them in hopes of finding the Werewolf. This happens four times before Jackson decides that he's hurt so he won't participate, and Scott realizes the new werewolf is Isaac. Sheriff Stilinski and his team show up to investigate the murder. Stiles tells Scott that Isaac will most likely end up in a holding cell for twenty-four hours, meaning he'd be at the police station for the night of the full moon, and Scott replies that he will probably "have the urge to maim and kill."
                          
During a chemistry class Danny Mahealani reveals that the police are talking to Jackson, thinking that he may be the witness they needs to hold him since he's underage. Scott and Stiles purposely get themselves sent to the principal's office to intervene. Jackson knew about the abuse and insists that it wasn't his problem. Sheriff Stilinski gives him a disgusted look before saying "...it's funny that the kids getting beaten up are always the ones that least deserve it." Jackson doesn't get it. Stiles epically fails at hiding behind a magazine when his father comes out of the office, and his dad ignores him, but says hello to Scott. Gerard is revealed as the new principal of the school.
                          
In the principal's office, Gerard looks over Scott and Stiles's student records and adds commentary before saying that one of them will have to stay for detention. It's implied that Stiles gets it.
                          
Lydia tries to talk to Jackson at his locker, but he obviously isn't very interested in her right now. Jackson rejects her even though she didn't really ask for anything-only thanked him for saving her-before telling her that she shouldn't go to the game that night because of the full moon.