|summary=Desperately sad but ultimately uplifting, a great, emotional page-turner for tweens.
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|aznus=B00LH4YYHS
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Mark has been battling cancer for more than half his life. For the last seven years he has missed school, been through treatments, and come close to death time and again. With the call that once again the cancer is back, he just can't face going through it again and so he takes his dog Beau and they run away to go and climb a mountain, with the intention that he will never return.