Contents
    PAGE
I. Marian Arrives 9
II. Parade 23
III. The Mystery of the Twenty-Eighth 39
IV. Lieutenant Bob 59
V. My Orders Have Come 79
VI. Good-Byes 92
VII. A Tough Job 107
VIII. Over the Trenches 122
IX. Behind the Enemy's Lines 141
X. A Gust of Wind 164
XI. First Aid 184
XII. Locked Doors 205
XIII. Come in, Comrade! 226
XIV. A Letter from London 248
XV. One Chance Out of Fifty 267
XVI. The Flying Man 285
XVII. Over the Frontier 302
XVIII. Captain Lucy 322