The Heroes of Olympus

The second series of Percy Jackson books by Rick Riordan

The Blood of Olympus

The Kane Chronicles

The Kane Chronicles series by Rick Riordan

The Red Pyramid
The Throne of Fire
The Serpents Shadow

The Bare Bum Gang

The Bare Bum Gang books by Anthony McGowan

The Donut Diaries

The Donut Diaries by Anthony McGowan and David Tazzyman

Sherlock Holmes

Start with one of the selections, like The Adventures of Sherlock Holmes, not A Study In Scarlet.

Mr Gum

By Andy Stanton and illustrated by David Tazzyman

Alex Rider

Fantastic spy stories by Anthony Horowitz