The sun is shining in Sea Harbor and a group of friends, the Seaside Knitters, are spending Thursday evenings knitting the sweetest of gifts—a baby blanket. But as the due date draws near, they find they must take time away from their needles and yarn to confront a murder and untangle a mystery before a certain baby is brought into the world....

It's an exciting time for yarn shop owner Izzy Chambers Perry. She and her new husband are expecting a baby, and all of Sea Harbor seems to be rejoicing with them. As a mother–to–be, Izzy is having a heady summer—full of bike rides, runs along the shore, and time spent with her aunt Nell and the other Seaside Knitters—until the day she spots an abandoned baby car seat and hand–knit blanket on the beach. Izzy immediately recognizes the blanket's material—a soft yellow angora yarn she displayed in her shop window last fall. Maybe it's the hormones, but Izzy has a terrible premonition, and when she realizes no one is claiming the car seat, she shoves it in her trunk. Soon it starts taking over her thoughts and her dreams. What happened to the baby who once sat inside it?

Unfortunately, Izzy's fear of something bad happening comes true when a young man who did odd jobs at her doctor's clinic is killed during a scuba dive. When Izzy discovers the man was actually murdered and is connected to the abandoned car seat, the crime becomes too close for comfort and Izzy asks her aunt Nell and knitting pals to investigate. It'll take the Seaside Knitters' careful attention to patterns—and their fierce commitment to bringing Izzy and Sam's baby into a peaceful town—to knit this mystery together....