When a murder shakes the small fishing village of Sea Harbor, Massachusetts, the members of the Seaside Knitters put their heads together and track down the killer.

The members of the Friday Night Knitting Club help one another cope with new challenges, as Catherine searches for love after her divorce, Darwin dreams of starting a family, Lucie struggles to care for her elderly mother, and Anita must choose between her grown children and her sweetheart.

After a brush with the law, Ben, a dyed-in-the-wool worrier, must take up a new hobby and chooses knitting, an activity at which he excels but must try to keep secret from his friends, enemies, and sports-obsessed father.