|Book 1: "The Maze of Bones" by Rick Riordan, skilled writer of The Percy Jackson and the Olympians series|
|Book 2: "One False Note" by Gordon Korman, author of the captivating ISLAND series|
|Book 3: "The Sword Thief" by Peter Lerangis|
|Book 4: "Beyond the Grave" by Jude Watson|
|Book 5: "The Black Circle" by Patrick Carman|
|Book 6: "In Too Deep" by Jude Watson|
|Book 7: "The Viper's Nest" by Peter Lerangis|
|Book 8: "The Emperor's Code" by Gordon Korman|
|Book 9: "Storm Warning" by Linda Sue Park, author of "A Single Shard"|
|Book 10: "Into the Gauntlet" by Margaret Peterson Haddix(Coming out: Sep. 28, 2010)|
There are also two companion books to the 39 Clues series, one of which, "The Black Book of Buried Secrets" is to be released October 26, 2010.
-"The Black Book of Buried Secrets"
The film is "in development" along with thousands of others, and is to be released in 2011. There isn't much information out there, as far as I can find, but if you happen to know of any news/rumors about the film adaptation, feel free to comment.
Read the series? Have strong feelings for it(positive or negative)? Comment but please do not include spoiler-content.