Episode 1: “March to Hell”
The episode picks up where last season’s cliffhanger finale left off: With Rizzoli hanging precariously from the edge of a cliff. Villainous serial killer Stanley Tuckerman stands over Rizzoli, watching gleefully as her fingers peel off the cliff’s edge like wet spaghetti falling off the ceiling. Suddenly, Isles speeds onto the scene in a Humvee, flinging herself from the moving vehicle and shooting Stanley precisely in the back of the head even though she is only a medical examiner. The rest of the episode details Rizzoli’s excruciating physical therapy to get her spaghetti fingers back in working order. Disgruntled black police sergeant George Jefferson bakes an apple pie to celebrate Rizzoli’s return to the station, but it turns out she doesn’t like apples or pie or much of anything anymore. Later, there’s a mysterious killing and everyone is concerned that the murderer might be a serial killer.
Episode 2: “Nero Fiddled”
Isles wakes up in bed with a mysterious man who might just be the murderer/serial killer from the last episode. Rizzoli complains about the fact that Isles is a fucking slut. Isles throws a chair and it almost hits disgruntled black police sergeant George Jefferson, who shouts that everyone needs to calm down. The atmosphere is tense. Fortunately, nerdy Asian Patrick Spleen is there to crack a joke about the aerodynamic qualities of chairs and everyone calms down. Later, Isles meets back up with her mysterious lover, who it turns out is not so mysterious after all – it’s her old high school boyfriend, except he got a complete face and body transplant. Rizzoli is still suspicious that he might be a murderer, though, because who gets a complete face and body transplant? Isles is nervous that she might be in love with him even though she is only a medical examiner. At the end of the episode Isles quietly nurses a tall glass of scotch in the back of a wood-paneled bar while a demographically appropriate song about lost love plays quietly.
Episode 3: “The One Where the Cat Dies”
An explosion at the fireworks factory has everyone on edge. Rizzoli is concerned that it might be the murderer/serial killer. Isles thinks it’s unlikely that a murderer/serial killer would destroy a fireworks factory because typically murderers/serial killers spend their timing murdering and serial killing. Disgruntled black police sergeant George Jerfferson announces that it’s ice cream night at the station and nerdy Asian Patrick Spleen gets all huffy because he’s lactose intolerant. Rizzoli punches him playfully on the shoulder but it turns out she’s really strong and nerdy Asian Patrick Spleen gets seriously hurt. While in the hospital, he meets the man in the bed next to him who might just be the murderer/serial killer everyone is looking for! Back at the station, Isles gets a little gassy from all the ice cream even though she is just a medical examiner.
Episode 4: “Naptime”
Another explosion at a different fireworks factory has everyone twice as on edge. Fortunately, Rizzoli brings in the guy she thinks is the perp. He’s very tall and ugly and angry all the time so it seems pretty obvious that Rizzoli really nailed this one on the head. Isles is not so sure even though she’s just a medical examiner, but she’s too busy going on a date with her face and body transplanted high school boyfriend to let Rizzoli know about her concerns. Disgruntled black police sergeant George Jefferson is also going on a date at the same truck stop as Isles and he can’t help but overhear her whisper to her face and body transplanted high school boyfriend that she might be in love with him even though everyone thinks he’s a serial killer. Disgruntled black police sergeant George Jefferson’s eyes go extremely wide at this announcement, as if he’s surprised. In the hospital, nerdy Asian Patrick Spleen continues to talk to the potential murderer/serial killer in the bed next to him, slowly discovering that the man is both old and diagnosed with head cancer. At the end of the episode, the angry perp escapes custody so that Rizzoli will have something to do in the next episode.