TIME TRAVEL AND ENEMIES-TO-LOVERS, YESSS! That's all I need to know, I'm sold, my soul is ready. In my mind's eye it's like a romantic spin on Spy vs. Spy (don't judge me) and I need it, I need it now. The cover art is interesting, especially if you have some knowledge about birds. Cardinals and Bluebirds are both notoriously aggressive and territorial, and I love the symbolism here.