His Dark Materials Series

What the series is about, according to Amazon: "These thrilling adventures tell the story of Lyra and Will — two ordinary children on a perilous journey through shimmering haunted otherworlds. They will meet witches and armored bears, fallen angels and soul-eating specters. And in the end, the fate of both the living — and the dead — will rely on them."

Number of books in the series: 3

Ages the series is best suited to: 8-12

Buy the books here: His Dark Materials Series [4] ($21)

Sam London Adventure Series

What the series is about, according to Amazon: Book One: "Haunted by a dream of a mythical gryphon, Sam London uncovers an ancient secret that will change the way he sees the world forever. Recruited by Dr. Vance Vantana, an eccentric zoologist and park ranger sent by the government, Sam is whisked away on an adventure that takes him to the farthest reaches of the globe."

Number of books in the series: 2

Ages the series is best suited to: 10-12

Buy the books here: Guardians of the Gryphon's Claw [5] ($13) and The Selkie of San Francisco [6] ($12)

Miss Peregrine's Peculiar Children Series

What the series is about, according to Amazon: "A mysterious island. An abandoned orphanage. A strange collection of very curious photographs. It all waits to be discovered in this groundbreaking novel, which mixes fiction and photography in a thrilling new kind of reading experience. As our story opens, a horrific family tragedy sets sixteen-year-old Jacob Portman journeying to a remote island off the coast of Wales, where he discovers the crumbling ruins of Miss Peregrine's Home for Peculiar Children."

Number of books in the series: 5

Ages the series is best suited to: 12 and up

Buy the books here: Miss Peregrine's Peculiar Children Series, Books 1-3 [7] ($26), A Map of Days [8] ($13), and The Conference of the Birds [9] ($15)

Pandava Series

What the series is about, according to Amazon: "Aru Shah . . . has a tendency to stretch the truth in order to fit in at school. While her classmates are jetting off to family holidays in exotic locales, she'll be spending her autumn break at home, in the Museum of Ancient Indian Art and Culture, waiting for her mom to return from her latest archeological trip. Is it any wonder that Aru makes up stories about being royalty, travelling to Paris, and having a chauffeur? One day, three schoolmates show up at Aru's doorstep to catch her in a lie. They don't believe her claim that the museum's Lamp of Bharata is cursed, and they dare Aru to prove it. Just a quick light, Aru thinks. Then she can get herself out of this mess and never ever fib again. But lighting the lamp has dire consequences. She unwittingly frees the Sleeper, an ancient demon whose duty it is to awaken the God of Destruction. Her classmates and beloved mother are frozen in time, and it's up to Aru to save them."

Number of books in the series: 3

Ages the series is best suited to: 9-12

Buy the books here: Aru Shah and the End of Time [10] ($6), Aru Shah and the Song of Death [11] ($10), and Aru Shah and the Tree of Wishes [12] ($14, available April 7, 2020)

Percy Jackson and the Olympians Series

What the series is about, according to Amazon: "Percy Jackson is a good kid, but he can't seem to focus on his schoolwork or control his temper. And lately, being away at boarding school is only getting worse – Percy could have sworn his pre-algebra teacher turned into a monster and tried to kill him. When Percy's mom finds out, she knows it's time that he knew the truth about where he came from, and that he go to the one place he'll be safe. She sends Percy to Camp Half Blood, a summer camp for demigods (on Long Island), where he learns that the father he never knew is Poseidon, God of the Sea. Soon a mystery unfolds and together with his friends — one a satyr and the other the demigod daughter of Athena — Percy sets out on a quest across the United States to reach the gates of the Underworld (located in a recording studio in Hollywood) and prevent a catastrophic war between the gods."

Number of books in the series: 5

Ages the series is best suited to: 8-12

Buy the books here: Percy Jackson and the Olympians Series [13] ($24)

Artemis Fowl Series

What the series is about, according to Amazon: "Twelve-year-old Artemis is a millionaire, a genius-and above all, a criminal mastermind. But Artemis doesn't know what he's taken on when he kidnaps a fairy, Captain Holly Short of the LEPrecon Unit. These aren't the fairies of the bedtime stories — they're dangerous!"

Number of books in the series: 8

Ages the series is best suited to: 10-14

Buy the books here: Artemis Fowl Series [14] ($40)

The Chronicles of Narnia Series

What the series is about, according to Amazon: "Set in the fictional realm of Narnia, a fantasy world of magic, mythical beasts, and talking animals, the series narrates the adventures of various children who play central roles in the unfolding history of that world. Except in The Horse and His Boy, the protagonists are all children from the real world, magically transported to Narnia, where they are called upon by the lion Aslan to protect Narnia from evil and restore the throne to its rightful line."

Number of books in the series: 7

Ages the series is best suited to: 8 and up

Buy the books here: The Chronicles of Narnia Series [15] ($29)

The Lost Years of Merlin Series

What the series is about, according to Amazon: "Washed up on the shores of ancient Wales, the boy had no home, no memory and no name... he was determined to find all three. This best-selling series follows the adventures and training of young Merlin on the mist-shrouded isle of Fincayra, an enchanted land between earth and sky that is being destroyed by blight. With this land's inhabitants to guide him, the boy will learn that Fincayra's fate and his own quest are strangely [intertwined]. He is destined to become the greatest wizard of all time--known to all as Merlin."

Number of books in the series: 9

Ages the series is best suited to: 10-14

Buy the books here: The Lost Years of Merlin Series [16] ($84)

The Secrets of the Immortal Nicholas Flamel Series

What the series is about, according to Amazon: "The Alchemyst Nicholas Flamel was born in Paris on 28 September 1330. Nearly seven hundred years later, he is acknowledged as the greatest Alchemyst of his day. It is said that he discovered the secret of eternal life. The records show that he died in 1418. But his tomb is empty and Nicholas Flamel lives."

Number of books in the series: 6

Ages the series is best suited to: 8-12

Buy the books here: The Secrets of the Immortal Nicholas Flamel Series [17] ($52)

Pennyroyal Academy Book Series

What the series is about, according to Amazon: "A girl from the forest arrives in a bustling kingdom with no name and no idea why she is there, only to find herself at the centre of a world at war. She enlists at Pennyroyal Academy, where princesses and knights are trained to battle the two great menaces of the day: witches and dragons. There, given the name 'Evie,' she must endure a harsh training regimen under the steel glare of her Fairy Drillsergeant, while also navigating an entirely new world of friends and enemies. As Evie learns what it truly means to be a princess, she realises surprising things about herself and her family, about human compassion and inhuman cruelty. And with the witch forces moving nearer, she discovers that the war between princesses and witches is much more personal than she could ever have imagined."

Number of books in the series: 3

Ages the series is best suited to: 8-12

Buy the books here: Pennyroyal Academy Book Series [18] ($8 each)

An Epic Series of Failures Series

What the series is about, according to Amazon: "Risk-averse Greg Belmont is content with being ordinary. He's got a friend — that's right, just one — at his fancy prep school, and a pretty cool dad (even if he is obsessed with organic soaps that smell like a mix of salted pork and Icelandic bog). The problem is, Greg isn't ordinary . . . he's actually an honest-to-goodness, fantastical Dwarf!"

Number of books in the series: 2

Ages the series is best suited to: 8-12

Buy the books here: The Legend of Greg [19] ($9) and The Curse of Greg [20] ($8)

The Uncommoners Series

What the series is about, according to Amazon: "As soon as Ivy and her brother Seb set foot back in the mysterious underground city of Lundinor, they know that something has changed . . . Where before there were cobbled streets, now the squares and lanes between the city's enchanted shops are lush with spring blooms - but something dark is stirring just below the surface, and uncommon traders are uneasy. Ivy and Seb have stumbled into a plot that could condemn every uncommoner to a disastrous fate."

Number of books in the series: 3

Ages the series is best suited to: 8-12

Buy the books here: The Uncommoners Series [21] ($40)

The Kane Chronicles

What the series is about, according to Amazon: "Narrated by two different wisecracking voices, featuring an ever-changing crew of friends and foes, and with adventures spanning the globe, the Kane Chronicles is nothing short of a thrill ride."

Number of books in the series: 3

Ages the series is best suited to: 8-12

Buy the books here: The Kane Chronicles [22] ($20)

The Lunar Chronicles

What the series is about, according to Amazon: "The Lunar Chronicles are futuristic retellings of classic fairy tales. In Cinder, a teenage cyborg (half human, half machine) must deal with a wicked stepmother, start a rebellion against the evil Queen Levana, and decide how she feels about a handsome prince. As the series continues, Cinder forges alliances with Scarlet, a spaceship pilot who is determined to solve the mystery of a missing loved one ― with the help of a magnetic street fighter named Wolf; Cress, a computer hacker who is imprisoned by Queen Levana; and Winter, a princess who's in love with a commoner, and who discovers that Cinder, Scarlet, and Cress may hold the key to saving her kingdom — and the world."

Number of books in the series: 6

Ages the series is best suited to: 12-18

Buy the books here: The Lunar Chronicles [23] ($50)

The Jumbies Series

What the series is about, according to Amazon: "Corinne La Mer claims she isn't afraid of anything. Not scorpions, not the boys who tease her, and certainly not jumbies. They're just tricksters made up by parents to frighten their children. Then one night Corinne chases an agouti all the way into the forbidden forest, and shining yellow eyes follow her to the edge of the trees. They couldn't belong to a jumbie. Or could they? When Corinne spots a beautiful stranger at the market the very next day, she knows something extraordinary is about to happen. When this same beauty, called Severine, turns up at Corinne's house, danger is in the air. Severine plans to claim the entire island for the jumbies. Corinne must call on her courage and her friends and learn to use ancient magic she didn't know she possessed to stop Severine and to save her island home."

Number of books in the series: 3

Ages the series is best suited to: 9-12

Buy the books here: Jumbies [24] ($7), Rise of the Jumbies [25] ($8), and The Jumbie God's Revenge [26] ($9)

The Ranger's Apprentice Series

What the series is about, according to Amazon: "They have always scared him in the past—the Rangers, with their dark cloaksand shadowy ways. The villagers believe the Rangers practice magic that makes them invisible to ordinary people. And now 15-year-old Will, always small for his age, has been chosen as a Ranger's apprentice. What he doesn't yet realise is that the Rangers are the protectors of the kingdom. Highly trained in the skills of battle and surveillance, they fight the battles before the battles reach the people. And as Will is about to learn, there is a large battle brewing. The exiled Morgarath, Lord of the Mountains of Rain and Night, is gathering his forces for an attack on the kingdom. This time, he will not be denied. . . ."

Number of books in the series: 12

Ages the series is best suited to: 10-13

Buy the books here: The Ranger's Apprentice Series [27] ($75)

The Spiderwick Chronicles Series

What the series is about, according to Amazon: "Join twins Jared and Simon and their older sister, Mallory, as they discover the fantastical world of Spiderwick."

Number of books in the series: 5

Ages the series is best suited to: 6-10

Buy the books here: The Spiderwick Chronicles Series [28] ($17)

The Worst Witch Series

What the series is about, according to Amazon: "Magic is on the timetable at a school for witches. Laughs, spells, disasters: a bewitching brew. Mildred Hubble is the worst student ever to darken the doors of Miss Cackle's Academy for Witches. Every spell she attempts goes horribly wrong. And things get worse when she accidentally turns Ethel, the teacher's pet, into her deadly enemy."

Number of books in the series: 7

Ages the series is best suited to: 8-12

Buy the books here: The Worst Witch Series [29] ($27)

The School For Good and Evil Series

What the series is about, according to Amazon: "Journey into a dazzling new world when two best friends enter the School for Good and Evil, where ordinary boys and girls are trained to be fairy-tale heroes and villains. One will train for Good, one will become Evil's new hope. Each thinks they know where they belong.

But when the two friends are swept into the Endless Woods, they find their fortunes are reversed…. The aftermath leads to unexpected paths, new alliances, and forces that divide them in an exhilarating quest to find their true Ever After."

Number of books in the series: 5

Ages the series is best suited to: 8-12

Buy the books here: The School For Good and Evil Series, Books 1-4 [30] ($25) and A Crystal of Time [31] ($10)

Gregor The Overlander Series

What the series is about, according to Amazon: "When Gregor falls through a grate in the laundry room of his apartment building, he hurtles into the dark Underland, where spiders, rats, cockroaches coexist uneasily with humans. This world is on the brink of war, and Gregor's arrival is no accident. A prophecy foretells that Gregor has a role to play in the Underland's uncertain future. Gregor wants no part of it -- until he realises it's the only way to solve the mystery of his father's disappearance. Reluctantly, Gregor embarks on a dangerous adventure that will change both him and the Underland forever."

Number of books in the series: 5

Ages the series is best suited to: 10-14

Buy the books here: Gregor The Overlander Series [32] ($20)