If you like the Charlie Bone series, here are some more suggestions.
Readers of Charlie Bone are often fans of Harry Potter, so you can start with those if you haven't read them.
From our Juvenile collection:
The Lion the Witch and the Wardrobe (Narnia, book 2) by C. S. Lewis.
Four English school children enter the magic land of Narnia through the
back of a wardrobe and assist Aslan, the golden lion, in defeating the
White Witch who has cursed the land with eternal winter.
Mister Monday (Keys to the Kingdom, book 1) by Garth Nix.
Seven days. Seven keys. Seven virtues. Seven sins. One mysterious house
is the doorway to a very mysterious world-- where one boy is about to
venture and unlock fantastical secrets. Arthur's life is saved by a key
shaped like the minute hand of a clock, but bizarre creatures from
another realm are determined to take the key even if it means killing
Magyk (Septimus Heap book 1) by Angie Sage and Mark Zug.
A wide cast of characters battle the forces of Darke Magyk in a
well-realized world of fantasy. At birth, Septimus Heap is carried away
for dead, and his father, Silas Heap, is entrusted with a baby girl.
When the villainous Supreme Custodian tries to assassinate the now
10-year-old Jenna, who, it turns out, is the daughter of the murdered
queen, the girl flees to the Marram Marshes along with some family
members, the ExtraOrdinary Wizard, and a young army guard known only as
"Boy 412." Pursued by the servants of the Necromancer DomDaniel, and
aided by an engaging array of magical beings, they finally prevail in a
satisfying and fairly exciting conclusion. (From School Library Journal,
who suggests this for grades 4-8).
The Field Guide (Spiderwick Chronicles, book 1) by Holly Black and Tony
The Field Guide sets up the story of the Grace children--13-year-old
Mallory and 9-year-old twins Jared and Simon--who with their mother move
into the dilapidated Spiderwick Estate only to quickly find themselves
sucked into a dark and fascinating world of faeries.
In both Juvenile and Young Adult collection:
Gregor the Overlander (first in a series) by Suzanne Collins.
When eleven-year-old Gregor and his two-year-old sister are pulled into
a strange underground world, they trigger an epic battle involving men,
bats, rats, cockroaches, and spiders while on a quest foretold by
The Amulet of Samarkand (The Bartimaeus trilogy, book one) by Jonathan
Nathaniel is a boy magician-in-training, sold to the government by his
birth parents at the age of five and sent to live as an apprentice to a
master. If leaving his parents and erasing his past life isn't tough
enough, Nathaniel's master, Arthur Underwood, is a cold and
condescending but they get along tolerably well over the years until the
summer before his eleventh birthday. Everything changes when he
(Nathaniel) is publicly humiliated by the ruthless magician Simon
Lovelace and betrayed by his cowardly master who does not defend him.
Nathaniel vows revenge - he devours magical texts and hones his magic
skills, all the while trying to appear subservient to his master. When
he musters the strength to summon the 5,000-year-old djinni Bartimaeus
to avenge Lovelace by stealing the powerful Amulet of Samarkand, the boy
magician plunges into a situation more dangerous and deadly than
anything he could ever imagine.
From our Young Adult collection:
Fablehaven (first in Fablehaven series) by Brandon Mull.
When Kendra and Seth go to stay at their grandparents' estate, they
discover that it is a sanctuary for magical creatures and that a battle
between good and evil is looming.
Leven Thumps and the Gateway to Foo by Obert Skye.
This imaginative and entertaining young adult fantasy novel successfully
depicts an unusual boy's coming of age. Oklahoma orphan teen Leven
Thumps has a hidden and powerful talent: he can glimpse, and then
manipulate, the future. He is also the only person on the planet who can
protect the gateway to Foo, a mythical realm whose existence ensures
that human beings in this reality retain the ability to dream, hope and
imagine. Sabine, the wicked ruler of Foo, wants to extend his tyranny by
ruling this world as well-but if that happens, no one on Earth would
ever be able to dream again. As Lev hurries to find the gateway between
the two worlds before Sabine does, he encounters several friends to help
him... (from Publisher's Weekly). School Library Journal suggests
The Witch's Boy by Michael Gruber.
A grotesque foundling turns against the witch who sacrificed almost
everything to raise him when he becomes consumed by the desire for money
and revenge against those who have hurt him, but he eventually finds his
true heart's desire.
Artemis Fowl by Eoin Colfer.
When a twelve-year-old evil genius tries to restore his family fortune
by capturing a fairy and demanding a ransom in gold, the fairies fight
back with magic, technology, and a particularly nasty troll.