Another Eva Ibbotson, and I kind of wish I had time to do a more thorough review. Takes place mostly in England at the start of WWII. The good: Strong female characters, some even studying science at university. Well developed characters. Entertaining dialogue. The not so good: Sometimes the attempt to reconcile the strong female characters with the time in which they lived is not so successful. Also, the book was longer than it needed to be. Extended for maximum drama, and it was obvious. Also, too strong of a sexual theme for the age level, IMO.