We haven’t yet mapped out the time travel itinerary.
INDEXER NOTES (SPOILERS!)
The four writers of the source film <i><a href='works-'>Il Mare</a></i> are taken from its <a href='https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FIl_Mare'>Wikipedia[/urlx page. This seems to be the most inclusive page, although I haven’t yet checked it against the actual credits in either <i>Il Mare</i> or <i>The Lake House.</i></a>