Christopher Wren

Childish, likely mentally ill architect

Mrs. Boyle

Old judge who was the second murdered

Giles Ralston

Arrogant, reckless man, wore similar attire as the murderer

Mollie Ralston

Overly trusting, owner of Monkswell Manor

Mr. Paravicini

Unexpected guest, rich

Major Metcalf

Overly respectful, was in the military

Miss Casewell

Manly, wore similar attire of the murderer and had an unhappy childhood, likey Corrigan daughter

Trotter

Sent by police to protect anyone in Monkswell manor who was related to the Longridge Farm Case

Mrs. Maureen Lyon

Real name Mrs. Maureen Stanning, abused the Corrigans and was the first murdered

Monkswell Manor

Owned by Mollie Ralston, rundown manor passed down from generation to generation

Three Blind Mice

Whistled by murderer before each murder, was also played on piano in the drawing room

24 Culver Street

Where the first murder happened

The Great Hall (of Monkswell Manor)

Where the second murder happened

The Longridge Farm Case

A crime that happened a long time before the play in which the Stannings had abused the Corrigans, resulting in the death of the youngest Corrigan son, both Mrs. and Mr. Stanning went to jail, Mr. Stanning died in jail while Mrs. Stanning served her sentence and was murdered at the start of the play