In present-day England, thirteen-year-old Ben and his twelve-year-old sister Rachel find two children who have been cryogenically frozen in a bomb shelter since 1956, and must prevent them from being discovered while helping them adjust to modern life.
Categories:
["Science fiction""Cold war""Brothers and sisters""Cryonics""Fiction""Spies""Cold War""Juvenile fiction""Spy stories""Children's fiction""Spiesfiction""Brothers and sistersfiction""Englandfiction""Social change""Guerre froide""Romansnouvellesetc. pour la jeunesse""Cryog\u00e9nisation""Fr\u00e8res et s\u0153urs""Siblings"]