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 sleuth Hal Beck is looking forward to another railway journey with Nat, his journalist uncle--this time riding the historic Safari Star through South Africa. Then the already eventful journey becomes even more so when one of their fellow passengers dies on board! Accident . . . or murder? With help from a new friend, Winston (and his mongoose, Chipo), Hal is determined to figure out if a murder has really taken place and, if so, who among a long list of suspects is the killer--all before the Safari Star arrives at its final destination.