Sixteen-year-old Sophie struggles to find normalcy after an incident she chooses not to remember took her sister's life, and by keeping a journal, making a new friend, and seeing a therapist she finally begins to recover.
Sixteen-year-old Laura, an American living in London, tries to find the person responsible for the death of her younger brother Billy, who has been killed by a terrorist bomb.
Brought to London under mysterious circumstances by his tutor, a young boy seeks the help of Sherlock Holmes when his tutor is kidnapped and he himself is threatened with the same fate.