The Moonlight Trap — Ruth Willock

What more pleasant prospect could there be for two young American girls like Constance and Peg than to fly to Europe for a summer trip? Constance would study in London for a few weeks, then join Peg, who is interested in Medieval carved figurines, in Zurich for a mountain holiday in search of treasure. Both have romance in mind as well as foreign travel.....

Title is: The Moonlit Trap