Long-running series such as Rick Riordan 's `` Heroes of Olympus '' are wrapping up . The last book in the Percy Jackson and the Olympians trilogy was released this year, but it is not yet clear if there will be a new one or just an extension to the current series. • YALit ( young adult novels organized by release date ) Carl Hiaasen 's first book for teens debuts in September . New series from `` Pretty Little Liars '' author Sara Shepard due out this fall .
Long-running series such as Rick Riordan 's `` Heroes of Olympus '' are wrapping up . The last book in the Percy Jackson and the Olympians trilogy was released this year, but it is not yet clear if there will be a new one or just an extension to the current series. Carl Hiaasen 's first book for teens debuts in September . New series from `` Pretty Little Liars '' author Sara Shepard due out this fall .