* Daniel Craig as Tom
* Summer Phoenix as Claire
* Rachael Blake as Rachel
* Robert Duvall as John
* Sean Penn as Peter
* Frances Fisher as Eleanor
* John C. Reilly as William
* Kevin Spacey as Michael
This is a fictional cast I have created, as the film "Summer Sun, Winter Moon" does not exist. It seems like you might be mixing up titles or details about a film.
If you have any more information about the film you are thinking of, please let me know and I can help you find the correct cast.