Mack adn the heartbeat Hum
BOOK 1: Mack and the Heartbeat Hum
The day begins at Notawallop Creek Station with a silent promise. Through the window, Mack greets his best friend, Dozy,
BOOK 2: The riverbed is dry and cracked, but a mysterious clue has been left behind.
BOOK 3: In the dead of night, guided by a clue from an old diary, Mack and Chrissy discover the source of the spooky "Ghost Light." .
BOOK 4: A mysterious map and a relic marked 'N.K.'—Mack and Chrissy are on the trail of a secret left behind by Australia's most famous outlaw, the legendary Ned Kelly.