If by heroine, you mean their love interest, it will undoubtedly be Callie Shaw who is Frank Hardy's girlfriend. She appears frequently in the story and also helps them in solving mysteries sometimes.
It is difficult to mention Joe's love interest, as you know, his eyes are always roaming! But it will be a safe bet to say Iola Morton (sister of Hardy's best friend Chet) as he suffers from frequent emotional upsurges when she dies in the first novel of the Casefile series.
The Hardy Boys' heroine is Nancy Drew, a fictional teenage detective known for her intelligence, courage, and investigative skills. She often collaborates with the Hardy Boys in solving mysteries.
Frank and Joe Hardy are the heroes in the Hardy Boys series. They are brothers who are amateur detectives and solve mysteries in their hometown of Bayport.
The heroine of the novel of that name by Hardy.
The writer of the hardy boys is Franklin W. Dixon.
Yes the hardy boys are back together
Yes, the Hardy Boys, Frank and Joe Hardy, do have a brother named Chet Hardy. He is an occasional character who assists them in their detective adventures.
The last Hardy Boys book with Callie Shaw is "The Hardy Boys #163: A Taste for Terror" which was published in 1995. Callie Shaw is a recurring character in the series as Joe Hardy's girlfriend.
The Hardy Boys Detective Handbook was created in 1959.
There are 66 Hardy Boys books in all.
The Hardy Boys television show began in 1977. The Hardy Boys shared the program with Nancy Drew for the first two seasons, but in the third and final season the entire show was devoted to the Hardy Boys.
There are five series or Hardy Boys namely,CanonDigestCasefilesClue BrothersUndercover Brothers
hardy boys final cut protagonist
The Hardy Boys Detective Handbook has 215 pages.