The Secret of the Swiss Chalet — Carolyn Keene

Handsome Prince Rudolph Krisler's request for help in finding his family's long-lost heirlooms launch Jean and Louise Dana on a thrilling mystery while on vacation in Europe.

First, the young investigators' search is hampered by a mysterious young man who claims to be a member of the Krisler family. Next, a strange accident nearly costs Louise her life. Thoroughly mystified but equally determined to unmask their enemies, the girls follow a baffling trail of clues which finally leads them to an abandoned chalet in the Swiss Alps.

A trip to the St. Bernard Hospice, a perilous snowslide, a whirlwind escape on skis -- all play an exciting part in solving this intriguing mystery.