1 THE KIDNAPPING 1
2 WHAT KIND OF MAN IS THE PROFESSOR？ 9
3 WHO ARE THE KIDNAPPERS？ 17
4 A TRIP TO PARIS 26
5 A THOROUGH SEARCH 34
6 WILSON’S PLAN 42
7 DIAMONDS 51
8 THE PROFESSOR IS FREE 58
9 CAN THE KIDNAPPERS ESCAPE？ 67
10 THE HOTEL IN THE PARK 75
QUESTIONS AND ACTIVITIES 85