In the first two books of the TimeWorm trilogy, an accident with a time machine of the mid-twenty-first century causes Theo and his robotic dog, Murphy, to time jump into the dangers of Nazi Germany.
The teens plan to return to Theo\'s future world after he is a spy in.
This final Book of the trilogy has Theo, Gracie, and Murphy back on American soil.
The trio escape to America on the Hindenburg.
Theo meets a German teen named Gracie, who is also running from Hitler\'s Third Reich.
In the first two books of the TimeWorm trilogy, an accident with a time machine of the mid-twenty-first century causes Theo and his robotic dog, Murphy, to time jump into the dangers of Nazi Germany