One of my favorite films of all time is all about this very subject: Lantana, 2001: an original, brilliant, Australian, mystery story whose underlying subject is the ways in which we inadvertently and unknowingly alter one another’s lives. By Ray Laurance and starring Geoffrey Rush.

Finding Neverland, 2004: a charming, if less than strictly accurate, film about JM Barrie and his relationship with the family of young boys that inspired Peter Pan. By Marc Forster, starring Johnny Depp and Kate Winslet.