This is the first book of the Sky Buddies, Jim Austin and Bob Caldwell and their plane, properly christened “HER HIGHNESS” in which they encounter many thrilling and exciting adventures.

Contents

I[The Step-brothers]
II[The Three Mysteries]
III[Thundering Waters]
IV[A Mysterious Find]
V[A Discovery]
VI[A Capture]
VII[A Tail Spin]
VIII[Ablaze]
IX[The Mail Must Go Through]
X[Danger]
XI[The Cry For Help]
XII[Detectives]

The Air Mystery of Isle La Motte

I
THE STEP-BROTHERS

“I say now, why are you fellows landing here?” The Canadian Mounted Policeman reined in his horse as close to the cock-pit as he could get, and eyed the two occupants in the plane, which had just landed in the southern part of the Province of Quebec.

“You want the truth, the whole truth, and nothing but the truth?” the blue-eyed youth in the passenger’s seat drawled in an accent that could belong to only one part of the world, Texas.