Francis - A student at Christopher's school, called a spastic ("spazzer")
by his brother Terry.
Terry – The older, delinquent brother of Francis.
Mrs. Peters – Teaches art at Christopher's school.
Mrs. Hardisty – A neighbor who died of an aneurysm.
Sarah – A student at Christopher's school, he once punched her when she pulled his hair.
Mrs. Forbes – An older woman who works at Christopher's school.
Reverend Peters – Mrs. Peters' husband and a vicar, he volunteers to be the invigilator for Christopher's A-level math exam.
Mr. Thompson – Lives at 40 Randolph Street.
Mr. Thompson's brother – Speaks to Christopher during his investigation.
Unnamed woman - Mother of the family who lives at 44 Randolph Street, speaks to Christopher during his investigation.
Mr. Wise – Lives at 43 Randolph Street with his disabled mother, speaks to Christopher during his investigation.
Number 38 – Next door neighbors, Ed Boone says they take drugs and forbids Christopher from talking to them.
Mrs. Gascoyne – Headmistress at Christopher's school.
Mr. Davis – Works at Christopher's school.
Mrs. Gray – The life skills instructor at Christopher's school.
Indian shopkeeper – Runs the local grocery where Christopher buys candy.
Ivor – Mrs. Alexander's dachshund.
Randyman – A Red-Faced Black Spider Monkey at the Twycross Zoo.
Miracle and Star – A pair of Patagonian Sea Lions at the Twycross Zoo.
Maliku – An Orangutan at the Twycross Zoo.
Joseph Fleming - A student at Christopher's school who is disruptive.
Mr. Land – Went to school with Judy Boone.