In the past years several best-selling authors for adults have turned their hands to writing for a younger audience. Since these authors write primarily thrillers with male protagonists, their young adult books are aimed, refreshingly, towards boys. However, they're good reading for adults as well. Best of all, they count toward the 50 Book Challenge.

John Grisham brings his considerable knowledge of courtroom procedure, and the law, to bear in Theodore Boone: Kid Lawyer. Theodore, an aspiring judge, has his own small office in his parents' law firm, and helps out friends with their problems. When a schoolmate comes to him with information that could influence a murder trial, Theodore faces a dilemma. Should he keep his informant's identity a secret, as promised, or reveal information that could change the course of the trial? Grisham's style is a little stiff, but this is still a fun read. The second book in the series is Theodore Boone: The Abduction.

Apparently not content to write about a million books a year for adults, James Patterson is another author who has produced books for younger readers. Best known are his Maximum Ride books. In The Angel Experiment, the first in the series, he introduces us to a group of kids who were bred in a laboratory, mostly human, but also part bird. As might be expected, the series has a decidedly paranormal tone.

Patterson's latest book for young readers, Middle School: The Worst Years of My Life, is more down to earth. Illustrated by Laura Park, the book tells the story of Rafe, who, egged on by a friend, is determined to break every rule in his school. But Rafe has bigger problems to face than just the detentions his pranks earn him. By story's end he will have to deal with bullying, among other problems. A poignant, as well as funny, book.

Before his death, Robert B. Parker began what was to be a series featuring his iconic detective, Spenser, as a young man. Growing up in the west with his father and uncles as role models, Spenser developed early his code of honor and self-reliance. In Chasing the Bear, he learns not only how to fight, but to fight for what is right. When a friend is abducted by her abusive, alcoholic father, Spenser tracks and rescues her, ultimately escaping in a tense, downriver journey. The climax is shocking, and yet in keeping with the Spenser we all grew to know and love. Written in Parker's terse style, this book illuminates Spenser's character, while providing a good story. Parker also wrote 2 other books for young readers, The Boxer and the Spy, and The Edenville Owls. Well worth a look.

Other authors who have written for young adults include Jack Higgins (Sure Fire), Carl Hiaasen (Hoot) and former NFL player Tim Green (Football Genius).

While these are all worthwhile books, there are many more titles by authors who don't also write adult books. Look for more suggestions in the future.