The Writers Referred To Walt As "Evil Juice Box Man" Off-camera, Walt had somehow planted the juice box in Brock's lunch at school, making sure only he came in contact with it. The rest of the plan involving the ricin stolen by Huell then played out on-screen.
Vince Gilligan, the creator of the BB universe, stated himself that Walt planted it into his juice in his lunchbox offscreen, when Andrea wasn't looking, which wouldn't be hard to do seeing as Walt knew her location from Jesse.
Brock obviously recognized and was scared of him when he went to Andrea's house in the last season, but based on his actual reaction to Walt, I don't think Brock knew for certain that Walt had been the one who poisoned him. Otherwise he would have reacted much more violently to Walt's presence in his home.
Obviously Jesse realised that since Brock survived and was actually poisoned by the plant, and that the chance of him actually losing the ricin pack was so small because he was taking great care of it, (let alone the chance of it being stuck in his Roomba) he suspected foul play, and Walt would be the only person to do ...
How Walter White Poisoned Brock | Breaking Bad Explained
Did Walt poison Brock on purpose?
Serious explanation, chronologically: In season 4 Walt convinced Jesse that Gus somehow stole the ricin cigarette to poison Brock. Walt did this to manipulate Jesse into choosing Walt's side (over Gus's). The hospital discovered that Brock was actually poisoned by a plant called Lily of the Valley.
He was just using Brock as a pawn in his game. I really do think he knew the right amount to give to make him seriously ill, but not die. Ricin would've pretty much guaranteed Brock's death, and Walt didn't want that if he could avoid it.
The writers of Breaking Bad referred to the incident as Walt becoming the "Evil Juice Box Man," imagining him injecting the poison into Brock's juice box. Off-camera, Walt had somehow planted the juice box in Brock's lunch at school, making sure only he came in contact with it.
Walt tells Saul to somehow extract the cigarette from Jesse. Thus Saul has Huell lift the ricin cigarette from Jesse's pocket (most likely by simply trading out the packs, dummy pack for the real one with the ricin).
It is revealed that Skyler is eventually forced to move into an apartment and takes a job as a taxi dispatcher, having all their assets seized. She still maintains custody of the children, however ("Granite State"). Skyler in her apartment.
The audience never learns the contents of Jesse's letter to Brock, though it's implied that it's an attempt at explaining/apologizing/making amends for all the evil that Jesse unwillingly brought into Brock's life. "That letter to Brock was the very first thing that Vince wrote when writing this script," Paul notes.
He hands Ed a final letter to one individual and, as Jesse drives away, we see who it's addressed to: Brock Cantillo. Breaking Bad fans will remember that Brock, played in the series by Ian Posada, is the young child of Jesse's girlfriend Andrea (Emily Rios), who is murdered in cold blood by Todd (Jesse Plemons).
The symptoms associated with lily of the valley poisoning are somewhat similar to ricin poisoning, but far less severe, as so far no deaths from consumption of lily of the valley have been confirmed.
Then, Walt has Saul, through his bodyguard Huell, remove Jesse's ricin cigarette by switching out the packs. He removes Jesse's pack with the cigarette containing the ricin vial and puts in a pack without it. This happens when Huell gives Jesse a pat down after Saul calls him to the office.
What kind of cigarettes does Jesse smoke in Breaking Bad?
Wilmington cigarettes also appear in the film, Proof of Life. The brand was introduced, as no real cigarette brand wanted their product associated with the poison, ricin.
Walt reveals his role in Jane's death to Jesse shortly before he was taken prisoner by Jack Welker's Gang, as a final blow after he ordered Jack to kill him, deeming him responsible for the deaths of Hank Schrader and Steven Gomez and the loss of his fortune.
He then panicked and tried to escape before tripping on a rug, suffering a severe neck injury. There was a belief that Ted died, but Skyler visited him in the hospital during season 5 where it is confirmed that he is partially paralyzed.
In Breaking Bad Season 4, Gus was aware that something might be wrong with his car because Walter had told him that he would bomb the car. This was a result of Jesse's loose lips.
Jessie, however, refused to be the one to kill his former mentor. He just gave him a nod of gratitude before taking off in Todd's El Camino. He is just glad to be out of the mess of drugs and violence.
What did the Lily of the Valley mean in Breaking Bad?
• 12y ago. Walt did use it on Brock, which was made evident when he put it in his evidence garbage bag with the materials he used for the pipe bomb against Gus. Walt's purpose for doing this was to use Jessie to kill Gus and to give added justification for his murder.
Ricin is a poison that Walter White prepares twice. Even though it is not the fastest-acting method of killing, Walt prefers it because it leaves behind little or no trace of its use on a victim.
However, Walt eventually chose to leave Gray Matter after hitting a snag in his relationship with his girlfriend, Gretchen (due to feelings of inferiority to her wealthy family) and sold his share of the company to Elliot for only $5000.
