When a new teacher arrives at school he finds students that are extremely well behaved and soon uncovers a special class of very young children forming a hive mind, keeping the students and teachers calm and focused with murderous results.
Set in the 1950s in the fictional village of Kembleford, the series follows Roman Catholic priest Father Brown who has a knack for solving crimes. He is assisted by parish secretary Bridgette McCarthy and is often a source of frustration for the local police.