Four university friends now in their thirties are all experiencing their own takes on motherhood in the new novel from Holly Bourne, and a baby shower for one of them becomes the scene of a unique whodunnit. We sat down to speak with her about her own experiences with a baby who just wouldn't sleep, her run-in with a Rotary Club Santa, and why she's only happy as a writer if the prospect of someone reading her work makes her feel sick.