Great episode
9.7
"Superb"
The episode opens with the family at a dinner celebrating Lois' birthday; the family gives her mediocre gifts. To their displeasure, Brian gives Lois a pair of tickets for a cruise, which she assumes are for her and Peter (Brian, of course, intended otherwise). Lois and Peter take the trip alone, not even taking Stewie. This greatly upsets Stewie and, as soon as he returns home, he begins to plot a diabolical plan to humiliate Lois out of revenge for leaving him behind, which he intends to carry out as soon as Lois returns. Brian scoffs, noting that Stewie has never followed through with any of his diabolical plans before, and is completely skeptical that he will do so this time. Stewie realizes that Brian is right, but swears that this time Lois is a dead woman, so he decides to take immediate action.
Meanwhile, on the ship, Peter proves to be a continual embarrassment to Lois: he defecates on the poop deck (the name of which he claims is misleading) and tells the story about how they almost aborted Meg at the captain's table. Humiliated, Lois has a falling out with Peter. At this time, Stewie, who has made his way onto the ship via speedboat, finds and confronts Lois; Lois, who had gone outside to mull over her frustration with Peter, is completely astonished to see him, wondering how he came on board without her knowing. To add to her shock, Stewie pulls out a submachine gun and, after a brief moment of tension, opens fire. Lois' chest is graphically riddled with bullets and she falls overboard, her body plunging and sinking deep into the ocean's abyss--Stewie is ecstatic that he has finally killed his mother.
Six days later, Lois is considered missing and Stewie is elated to discover that no one suspects foul play as the other Griffins begin to worry. Since she has been missing for so long, Joe tells a distressed Peter that the search for her has been called off and he must now accept the fact that Lois is gone.
A year passes and, during this time, the Griffins have managed to move on with their lives: Peter begins dating other people (such as a stick figure and even Bonnie, each with little success), Chris has been led to believe that Lois is merely away at a health spa, and Meg, as Stewie states, has really begun to flourish after Lois' murder. Brian restates that her death was an accident, but Stewie counters by saying that was what everyone was led to believe. Greatly disturbed by this revelation, Brian asks Stewie if he killed Lois; Stewie just mockingly denies it. Brian realizes that he actually carried out his plan, and vows to find evidence and bring him to justice.
At the Drunken Clam, Peter mentions to his friends that his wife's life insurance has finally paid out. He casually casts suspicion on himself by noting that he took out the policy while they were on the ship, just after having secretly wished she were dead after their fight, before leaving to buy more hot dogs (Meg was using them to masturbate Suspecting him of murdering Lois, they decide to search his trash for clues. Incidentally, Stewie realizes that keeping evidence of his crime as mementos is too risky with Brian snooping around, and throws into the trash his drawings depicting Lois getting killed in various ways and his gun. Joe and the others search the trash and find these items just after Stewie disposes of them, implicating Peter as the murderer; noticing the coincidence, Stewie discovers that this means he is now exempt from accusation. Family Guy's officially celebrated 100th episodePeter is brought into the police station for questioning where Joe reluctantly informs Peter that he is the prime suspect for Lois' murder and that things look bleak for him. At his trial, Meg and Chris begin to believe he killed their mother. Brian, however, convinces them to not judge him too quickly and that he is innocent, though Stewie attempts to convince them otherwise. Lois' father, Carter, testifies against Peter, presenting a video recreation of the crime in which he plays Peter and an Asian hooker (who is actually shot and killed by Carter in the video) plays Lois. Next, Chris is brought to the stand and asked to recall anything bad Peter did; Chris responds by telling the court of a time Peter picked his nose and wiped his finger on Meg's hat. Finally, Peter is brought to the stand and denies killing Lois, stating that he loves his wife. However, the prosecutor manages to get Peter to reveal things that would make it seem obvious as to why he would kill her, albeit perhaps unintentionally (such as drinking, striking her periodically, and being aggressive in nature).
Towards the end of the trial, Peter is found guilty and is sentenced to life in prison with no possibility of parole. But before the sentence is carried out, a mysterious figure barges into the room--the court is stunned to discover it is none other than Lois herself, very much alive. The Griffins are greatly relieved and overjoyed to find she is safe and that Peter didn't kill her after all. After happily reuniting with her family, Lois goes on to say that someone else did indeed try to kill her. When Peter asks her if she remembers who it was, Lois responds to the entire court, pointing to her incredulous infant son, "It was Stewie!". The episode ends, setting the stage for the next episode.