The Lost Riolu is the second book in the Pokémon Diamond and Pearl Chapter Books.
It is 78 pages in length.
Rescue Mission: Riolu!
When Ash and his friends encounter an injured Riolu, they want to help it. But this is no ordinary Riolu. It's afraid to trust Ash, and with good reason: Riolu's on the run from two different groups of Pokémon poachers, including ruthless Hunter J.
Now it's up to Ash to win the little Fighting-type's trust. Because the move that makes Riolu so special just may be the only thing that can save it....
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