An epistolary novel, spanning the ages and the many-verse branches of a time war. The Agency, a post-singularity technoworld, and The Garden, a world spanning consciousness based in all organic matter, each field agents to nudge history towards themselves as inevitable outcome of time. Red and Blue are opposing agents that enter into correspondence. Co-written by Amal el-Mothar and Max Gladstone. A very different story, which made it great fun to read.