| Jupiter Jones |
First Investigator |
(Justus Jonas) |
|
| Pete Crenshaw |
Second Investigator |
(Peter Shaw) |
| Bob Andrews |
Records and Research |
| Titus Jones |
Justus' uncle |
(Onkel Titus) |
| Mathilda Jones |
Justus' aunt |
(Tante Mathilda) |
| Worthington |
chauffeur |
(Morton) |
| Allie Jamison |
little girl living in the neighborhood of the Three Investigators |
| Marie |
housemaid of the Jamison family |
| Miss Patricia Osborne |
Allie Jamisons aunt |
| Miss Madelyn Enderby |
hairdresser of Patricia Osborne |
| Mr. Hugo Ariel |
alias Johnny Boye |
(Mr. Hugo Asmodi) |
| Mr. Noxworth |
grocer |
| Mr. H. Hendricks |
grocer |
| Mrs. Margaret Compton |
collector |
| Mr. Bentley |
alias Dr. Henry W. Barrister; professor for anthropology |
| Dr. Shaitan |
alias Henry Longstreet, alias Harry the Dip; swindler; high priest of the sinister fellowship |
| Max |
ex-convict burglar; handyman of Dr. Shaitan |
| Ellis |
handyman of Dr. Shaitans |
| Dr. Peters |
family doctor of the Jonas' family |
| Mara |
gypsy woman |
| Samuel Reynolds |
Chief Inspector of the Police of Rocky Beach |
| Mr. Alfred Hitchcock |
|
[(white in brackets) = german name]
|