The Warning is the sixteenth book in the Animorphs

Animorphs

Animorphs is an English language science fiction series of young adult books written by K. A. Applegate and published by Scholastic. Five humans, Jake, Marco, Cassie, Rachel, and Tobias, and one alien, Aximili-Esgarrouth-Isthill , obtain the ability to morph into any animal they touch. They name...

 series, written by K.A. Applegate. It is narrated by Jake.

Plot summary

Jake discovers a Yeerk website, but is it what it seems? It looks like a crazy mix of fact and fiction. He's not sure if it's a Yeerk trap, or a place for potential Yeerk-fighters to meet. Jake and the Animorphs decide to travel to the Web Access America headquarters, a two-hour flight from their own city. The kids can't afford plane tickets, so they morph flies with Tobias acquiring a fly morph. After Marco dabbles in a first-class passenger's Salisbury steak, the occupants on the plane are alerted. A flight attendant swats Jake, nearly killing him. A shaken Jake survives and tries to hide his fear, but Cassie takes notice.

At Web Access America, Marco and Ax hack into the WAA records and discover the identities of some of the screen names on the Yeerk website. They need a distraction, so the children morph and create a spectacle for anyone working in the offices. One of them is the founder of WAA himself, Joe Bob Fenestre - the second richest man in the country. Marco also discovers that his online girlfriend is in fact a seventy-three year-old retired postal worker. On the way back to the airport, Cassie objects to Jake morphing the fly again. Jake tries to tell every one he is fine with morphing a fly even though he is scared to death. Their relationship is strained for the time being.

Back home, Jake needs to form a new plan to infiltrate Joe Bob Fenestre's multi-million dollar compound. Cassie objects, wanting to save Gump, a Yeerk forum regular, from confessing to his Controller father what he knows. Jake and the others, though, decide Fenestre's the center of the issue. Jake, without any prior intelligence or preparation, sends the Animorphs to the billionaire's property. They are immediately attacked by gun-toting humans, pack hounds, and Rachel is shocked unconscious by a bug zapper. Ax is captured by the dogs. Jake and the others, shaken, need to find another way to break in. Jake travels to The Gardens zoo complex, and acquires a rhinoceros morph. He morphs and breaks through the entrance to the Fenestre mansion, impervious to human shotguns. The others follow, and morph their standard battle morphs.

They find Fenestre, along with Rachel and Ax in a suspended time state known as 'biostasis'. Fenestre explains to Jake, Cassie, Marco and Tobias that he is Visser Three's twin brother - Esplin 9466 Lesser. Visser Three, unwilling to share his power with his sibling, banished him to Earth as a lowly telephone operator. Esplin, combining his Yeerk technical knowledge with his host's human knowledge, created a web service that would serve as a vast pool of information for the Yeerk invasion. The Visser was enraged, and has been plotting to kill him.

Jake asks Esplin how he survived without a Yeerk pool. Esplin, his host's eyes void of emotion, tells him that he finds human-Controllers on the Yeerk forum. He has them kidnapped, splits the hosts' heads open, and feeds on the Yeerk inside. "One every three days. Ten a month." Fenestre admits that he is a cannibal serial killer. A horrified Cassie tries to attack him, but Jake stops her. He'd rather allow Esplin to kill as many Yeerks as he could - even it means sacrificing the host. Cassie is enraged. Jake threatens Esplin, and they leave with Rachel and Ax.

Jake later meets with Cassie, who'd been talking to Gump, from the Yeerk web site chat, at his elementary school. The saddened Cassie tells Gump never to trust his father. Jake tries to comfort her, but to no avail. Later on, Jake watches a news report that Fenestre's house had been burned down. He hints that he may have burned down the house out of disgust for the cannibal killer.

Morphs

Morpher	Morphs acquired	Morphs used
Jake Jake Berenson Jake Berenson is a fictional character and one of the main protagonists from the science-fiction book series Animorphs, written by K. A. Applegate. Until the penultimate book of the series, his last name was never revealed, and he was known only as Jake...	Rhinoceros Rhinoceros Rhinoceros , also known as rhino, is a group of five extant species of odd-toed ungulates in the family Rhinocerotidae. Two of these species are native to Africa and three to southern Asia....	Housefly Housefly The housefly , Musca domestica, is a fly of the suborder Cyclorrhapha... , Siberian Tiger, Peregrine Falcon Peregrine Falcon The Peregrine Falcon , also known as the Peregrine, and historically as the Duck Hawk in North America, is a widespread bird of prey in the family Falconidae. A large, crow-sized falcon, it has a blue-gray back, barred white underparts, and a black head and "moustache"... , Rhinoceros
Rachel Rachel (Animorphs) Rachel is a fictional character from the sci-fi book series Animorphs. Her full name is never explicitly mentioned in the books, but her relation to her cousin Jake Berenson through their fathers makes it most likely to be Rachel Berenson, if it was never changed or hyphenated.-Biography:Before the...	--	Housefly Housefly The housefly , Musca domestica, is a fly of the suborder Cyclorrhapha... , Grizzly Bear Grizzly Bear The grizzly bear , also known as the silvertip bear, the grizzly, or the North American brown bear, is a subspecies of brown bear that generally lives in the uplands of western North America... , Bald Eagle Bald Eagle The Bald Eagle is a bird of prey found in North America. It is the national bird and symbol of the United States of America. This sea eagle has two known sub-species and forms a species pair with the White-tailed Eagle...
Tobias Tobias (Animorphs) Tobias is a fictional character from the sci-fi book series Animorphs written by K.A. Applegate. His surname is never mentioned, but had the Ellimist not altered time in order to take his father, Elfangor-Sirinial-Shamtul, back to his old life, his full name would have been Tobias Fangor, the...	Housefly Housefly The housefly , Musca domestica, is a fly of the suborder Cyclorrhapha...	Human Human Humans are the only living species in the Homo genus...  (himself), Housefly
Cassie Cassie (Animorphs) Cassie is a fictional character from the sci-fi book series Animorphs, written by K. A. Applegate. Her last name is never mentioned, although she referred to it as being "nice" in The Secret.-Biography:...	--	Housefly Housefly The housefly , Musca domestica, is a fly of the suborder Cyclorrhapha... , Skunk Skunk Skunks are mammals best known for their ability to secrete a liquid with a strong, foul odor. General appearance varies from species to species, from black-and-white to brown or cream colored. Skunks belong to the family Mephitidae and to the order Carnivora... , Osprey Osprey The Osprey , sometimes known as the sea hawk or fish eagle, is a diurnal, fish-eating bird of prey. It is a large raptor, reaching more than in length and across the wings... , Wolf
Marco Marco (Animorphs) Marco is a fictional character from the sci-fi book series, Animorphs, written by K. A. Applegate. His last name is never mentioned.-Biography:...	--	Housefly Housefly The housefly , Musca domestica, is a fly of the suborder Cyclorrhapha... , Osprey Osprey The Osprey , sometimes known as the sea hawk or fish eagle, is a diurnal, fish-eating bird of prey. It is a large raptor, reaching more than in length and across the wings... , Gorilla Gorilla Gorillas are the largest extant species of primates. They are ground-dwelling, predominantly herbivorous apes that inhabit the forests of central Africa. Gorillas are divided into two species and either four or five subspecies...
Ax Aximili-Esgarrouth-Isthill Aximili-Esgarrouth-Isthill is a fictional character from the sci-fi book series Animorphs.-Biography:Aximili is a young Andalite who becomes stranded on Earth when the Andalite Dome Ship GalaxyTree is shot down by Yeerk fighters...	--	Human Human Humans are the only living species in the Homo genus... , Housefly Housefly The housefly , Musca domestica, is a fly of the suborder Cyclorrhapha... , Northern Harrier