Character guide

Frank Hardy

major

Also known as Frank

One of the Hardy boys, a teenage detective who helps solve the tower treasure mystery.

Joe Hardy

major

Also known as Joe

The younger Hardy boy, impulsive and brave, assisting his brother in the investigation.

Fenton Hardy

major

Also known as Mr. Hardy, the Hardy, Waiting Fenton Hardy

The boys' father, a renowned private detective who guides the case.

Chet Morton

supporting

Also known as Chet

A chubby, fun-loving friend of the Hardy boys who often helps with their cases.

Callie Shaw

supporting

Also known as Callie

Frank Hardy's girlfriend, a supportive friend who aids the investigation.

Red Jackley

supporting

Also known as Jackley, Red, XIV Red Jackley

A red-haired thief who confesses to the tower robbery before dying.

Ezra Collig

supporting

Also known as Chief Collig, Collig, IV The Holdup Chief Ezra Collig

The chief of police in Bayport who works with the Hardy family.

Hurd Applegate

supporting

Also known as Mr. Applegate, Applegate, old Applegate

A wealthy, eccentric man whose tower is robbed, hiring the Hardys.

Detective Smuff

supporting

Also known as Smuff, the loyal Smuff

A bumbling detective who competes with the Hardys on the case.

Mr. Robinson

supporting

Also known as Robinson, rascal Robinson

A shady character suspected of involvement in the tower theft.

Perry Robinson

supporting

Also known as Perry

Mr. Robinson's son, a friend of the Hardy boys who gets caught up in the mystery.

Slim Robinson

minor

Also known as Slim, Slim Robinson

Another son of Mr. Robinson, a chum of the Hardy boys.

Adelia Applegate

supporting

Also known as Adelia, XXIII Adelia Applegate

Hurd Applegate's sister, a sharp-tongued woman who offers a reward.

Con Riley

minor

Also known as Constable Con Riley, Con, Constable Riley, Riley, Policeman Con Riley

A local policeman who assists in the investigation.

Harold Morley

minor

Also known as Morley

A man whose car is stolen, leading to the initial mystery.

Lem Billers

minor

Also known as Billers, Lem Billers

A suspect in the car theft, later found to be innocent.

Mr. Billers

minor

Lem Billers' father, who vouches for his son's innocence.

Henry Robinson

minor

A member of the Robinson family, possibly a relative of Mr. Robinson.

Mrs. Robinson

minor

Mr. Robinson's wife, a worried mother.

Phil Cohen

minor

Also known as Phil

A friend of the Hardy boys who helps with the investigation.

Tony Prito

minor

Also known as Tony

A friend of the Hardy boys, often involved in their adventures.

Ike Harrity

minor

Also known as Harrity, Mr. Harrity

A local man who provides information about the stolen car.

Rocco

minor

A criminal associate of Red Jackley, involved in the tower theft.

Miss Applegate

minor

A relative of Hurd Applegate, possibly his daughter or niece.

Mrs. Hardy

minor

The mother of Frank and Joe Hardy, a supportive homemaker.

Mr. Norton

minor

A man who reports a stolen roadster to the police.

Kauffman

minor

A jeweler who appraises stolen items from the tower.

Jerry Gilroy

minor

Also known as Jerry

A friend of the Hardy boys who appears briefly.

Iola Morton

minor

Also known as Iola

Chet Morton's sister and Joe Hardy's girlfriend.

Biff Hooper

minor

Also known as Biff

A strong friend of the Hardy boys who helps occasionally.

Tessie

minor

A maid or servant in the Applegate household.

Paula

minor

A woman mentioned in connection with the Robinson family.

Mrs. Wills

minor

A neighbor who provides information about the Robinsons.

Henry J. Brown

minor

Also known as Mr. Brown, Brown

A man who reports a suspicious character to the police.