The Door Within trilogy is along the lines of Narnia except 1) more modern and 2) much cooler.
if you are going to be buying TDW trilogy my advise would be buy the paperback version. it's kinda like a dvd with aton of great deleted scenes and insider info.
The Door Within(Book #1) is SO FUNNY! It had be almost cracking my ribs from laughing SO HARD!
Online Summary of The Door Within-Aidan Thomas is miserable. And it's much more than the strange nightmares he's been having. Just when life seemed to be coming together for Aidan, his parents suddenly move the family across the country to take care of his wheelchair-bound grandfather. When strange events begin to occur, Aidan is drawn into his grandfather's basement where he discovers three ancient scrolls and an invitation to another world.
No longer confined to the realm of his own imagination, Aidan embarks on an adventure where he meets knights, warriors, kings and mysterious Glimpses who can travel between worlds. Aidan joins them in the struggle between good and evil. With the fate of two worlds hanging in the balance, Aidan faces Paragory, the eternal enemy. Will Aidan be willing to risk everything and trust the unseen hand of the one true King? Recommended for ages 10 and up.