A beautifully written book which starts off slowly if captivatingly but I found myself getting more and more immered in it as it went along. A book with two authors writing the letters of each protagonist back and forth. Surprisingly poetic, philosophical, the prose has a shimmering beauty that will stay with me long after the plot fades.

The idea of dna running through the book matches with the time travel theme as do the double female characters' love story which pushes the book past a exclusively genre centric reading. A modern classic. ★★★★★ 📚.