Sam Sedgman

Every summer holiday, Isaac Turner spends three weeks with his grandfather, Ferdinand, at his house in Italy, and this year his best friend Hattie is coming too.

A locked-room mystery packed with rooftop chases, hidden codes and mind-bending science, The Clockwork Conspiracy is a must for fans of the Adventures on Trains series and Sharna Jackson's High Rise mysteries....

Isaac and Hattie have been invited to a high-profile event at the French National Archives in Paris to finally celebrate their achievement in saving time. But as Isaac prepares to make his speech, the lights go out and a single shot is fired.

In this third book of the middle-grade Adventures on Trains series by M. G. Leonard and Sam Sedgman, amateur sleuth Hal Beck travels to South Africa with his uncle to a ride a famous train...and stumbles onto a murder mystery! Following his adventure on the California Comet, artist and amateur...

In this second audiobook of the middle-grade Adventures on Trains series, amateur sleuth Hal Beck travels to the U.S. with his uncle to ride a famous train—the California Comet—and stumbles on a new mystery to solve, in M.G. Leonard and Sam Sedgman's Kidnap on the California Comet... After...

In The Highland Falcon Thief: Adventures on Trains #1, a middle-grade series starter from MG Leonard and Sam Sedgman, a young boy is swept up in an investigation to uncover the perpetrator of a jewel theft. This program includes an author's note read by the authors When eleven-year-old Harrison...