Who was Ulrich's brother?

What's near the cave?

Who disappeared the night the youngsters went to the forest?

What year was Mikkel sent to?

Who was Michael's child?

What did the time traveler give to Elli? Clue: it used to belong to her mother.

What is the time traveler's name?

All the people and animals that died had one thing in common, what was it?

What time was the letter supposed to be opened?

How does the series begin?