Perhaps it all started when a kind stranger helped Rachel to board the Kindertransport in 1939, or in 2025 when scientists Jamie and Annamarie accidentally invented a time portal. Or maybe when Jamie’s mother Fran, the only historian they could trust to keep their secret, persuaded them to let her investigate an ancestral mystery in person. But now Annamarie is missing in Nazi occupied Prague, and Jamie must arrive on time to undertake a desperate rescue mission. Meanwhile, four-year-old Freddie, grandson to Fran and nephew to Jamie, struggles with vague memories of a time before he was...