Their holiday cheer is multiplied when Izzy's younger brother, Charlie Chambers, unexpectedly arrives to volunteer at a local clinic. He brings with him outspoken hitchhiker Amber Hanson, who is returning to Sea Harbor to claim an inheritance. She quickly reacquaints herself with the area--and forms an unlikely friendship with Charlie. But their bond is shattered when her body is found beneath the undecorated trees on the Harbor Green.

Charlie is a suspect in the murder, so Izzy and her fellow Knitters step in to uncover the truth. Their journey takes them into Charlie's past and tests their fierce love for him. But it's only by peeling away long-buried secrets that they can hope to restore joy to the season and enjoy the shining lights of the newly decorated trees....