I've written a book which switches between two narratives in alternating chapters: the present and an event from the past. The past event ultimately turns out the be the reason behind all the drama in the present narrative. How can I go about showing this in the sypnopsis. Should I follow the exact sequence of the novel (i.e. alternating)? Or should I condense the whole 'past' down into the frist half of the synopsis and follow it with a condensed version of the 'present'? I'm worried about how I can smoothly change between each in the synopsis without a lot of 'Meanwhile, back in the past...' type sentences. Can anyone point me in the direction of any synopses done like this? I'm wondering what a synopsis would have looked like for William Boyd's Brazzaville Beach, for example.