Hiram and Sibyl Eisenberg have fallen head over heels in love with Leif and Laura Wrightson. Leif and Laura return all the same passion for Sibyl and Hiram, yet all four remain committed to their spouses. What to do? The year is 1971, the place is California, and what never before seemed possible is suddenly irresistible. Camping on the shores of Fallen Lake in the high Sierra, one night they begin a new direction in their lives and those of their children, turning two marriages into one.

You can explore these fictional events in two ways:

Fallen Lake, the book, tells the story from the eyes of these characters as it unfolded in the 1970s. And here on this website you can read an interactive story of the same characters blogging, in the present day.