ROBERTA GREY
LORD CHARLES LAMPREY
LADY CHARLES LAMPREY
HENRY LAMPREY, their eldest son
FRIEDE LAMPREY (FRID), their elder daughter
COLIN AND STEPHEN LAMPREY, twins, their second and third sons
PATRICIA LAMPREY (PATCH), their second daughter
MICHAEL LAMPREY (MIKE), their youngest son
MRS. BURNABY (NANNY), their nurse
BASKETT, their butler
CORA BLACKBURN, their parlour-maid
STAMFORD, a commissionaire
GRIMBALL, a “bum”
THE LADY KATHERINE LOBE, aunt to Lord Charles
GABRIEL, MARQUIS OF WUTHERWOOD AND RUNE (UNCLE G.), elder brother to Lord Charles
VIOLET, MARCHIONESS OF WUTHERWOOD AND RUNE (AUNT V.), his wife
GIGGLE, their chauffeur
TINKERTON, Lady Wutherwood’s maid
DR. KANTRIPP, the Lampreys’ doctor
SIR MATTHEW CAIRNSTOCK, a brain specialist
DR. CURTIS, police surgeon
DETECTIVE-INSPECTOR FOX of the Central Branch, Criminal Investigation Department
CHIEF DETECTIVE-INSPECTOR ALLEYN of the Central Branch, Criminal Investigation Department
DETECTIVE-SERGEANT BAILEY, a finger-print expert
DETECTIVE-SERGEANT THOMPSON, a photographic expert
POLICE-CONSTABLE MARTIN
POLICE-CONSTABLE GIBSON A police-constable who has read “Macbeth”
DETECTIVE-SERGEANT CAMPBELL, on duty at 24 Brummell Street
NIGEL BATHGATE, Watson to Mr. Alleyn
MRS. MOFFATT, housekeeper at 24 Brummell Street
MOFFATT, her husband
MR. RATTISBON, solicitor