The sixth standalone book in this middle grade series, The Arctic Railway Assassin, has young sleuth and artist, Hal, on his most dangerous adventure yet, when

The bestselling, prize-winning Adventures on Trains series embarks on a thrilling sixth adventure as Harrison Beck and Uncle Nat climb aboard the night train to

Board the California Comet and help Harrison Beck to solve another heart-stopping mystery in the second Adventures on Trains story, Kidnap on the California Com

'A thrilling and hugely entertaining adventure story' – David Walliams on The Highland Falcon Thief Ride into danger with Hal and Uncle Nat on the fifth breat