"Cassie Sullivan, the survivor of an alien invasion, must rescue her young brother from the enemy with help from a boy who may be one of them"--Provided by publisher of original edition.

"Paris, 1939. Young, ambitious, and tempestuous, Odile Souchet has it all: Paul, her handsome police officer beau; Margaret, her best friend from England; her adored twin brother Remy; and a dream job at the American Library in Paris, working alongside the library's legendary director, Dorothy Reeder. But when World War II breaks out, Odile stands to lose everything she holds dear - including her beloved library. After the invasion, as the Nazis declare...