For twelve-year-old twins Andrew and Evie, moving is a way of life. Their dad is in the military, and they've never stayed in one place for long. But relocating has gotten harder since their mother disappeared on the twins' eleventh birthday, leaving only a cryptic note.
Lerangis, Peter. Spy X ; #1.
Spy X ; #1
Twins -- Juvenile fiction.
Wall, Andrew (Fictitious character) -- Juvenile fiction.
Wall, Evie (Fictitious character) -- Juvenile fiction.
Detective and mystery stories.