In The Highland Falcon Thief: Adventures on Trains #1, a
middle-grade series starter from M. G. Leonard and Sam Sedgman, a young
boy is swept up in an investigation to uncover the perpetrator of a
jewel theft.
When eleven-year-old Harrison Hal Beck is forced to accompany his
travel-writer uncle on the last journey of a royal train, he expects a
boring trip spent away from video games and children his age.
But then Hal spots a girl who should not be on board, and he quickly
makes friends with the stowaway, Lenny. Things get even more interesting
when the royal prince and princess board for the last leg of the
journey--because the princess's diamond necklace is soon stolen and
replaced with a fake! Suspicion falls on the one person who isn't
supposed to be there: Lenny.
It's up to Hal, his keen observation, and his skill as a budding sketch
artist to uncover the real jewel thief, clear his friend's name, and
return the diamond necklace before The Highland Falcon makes its last
stop.