Heidi Cooper Smith - Little Pink Dog Books, 2023

Sid loves socks, and he has LOTS, hung in perfectly matching rows of eight. When his socks start disappearing one by one, Sid’s life is thrown into turmoil. Soon his odd socks box overflows to fill a room, and a desperate Sid stages a stakeout to solve the mystery. But what will he do if he discovers his missing socks are gone forever?