"The Hardy Boys" Fill in the Blank 2 Quiz

Answer: Panel

In "The Secret Panel", Frank and Joe investigate the mysterious case of a man who had supposedly died five years prior to the story, but who has recently spoken to them. Moreover, the man, Mr. John Mead, had a mansion that did not have any doorknobs or keyholes.

Answer: Hawk

In "The Hooded Hawk Mystery", Joe and Frank use a peregrine falcon (also called a duck hawk) to find the whereabouts of a missing prince from India. The prince is believed to have been kidnapped by people smuggling refugees illegally.

Answer: Phantom

In "The Phantom Freighter", Frank and Joe board a freight ship for reasons they are not aware of. They soon discover that the ship is used in an illegal counterfeiting ring, jewel smuggling, drug dealing and other crimes.

Answer: Express

In "The Mystery of the Flying Express", Frank and Joe investigate when the Flying Express is stolen. The Flying Express is a hydrofoil (a vehicle that is like a plane but can travel on water) that Frank and Joe were guarding for its owner.

Answer: Claw

In "The Twist Claw", Frank and Joe discover a connection between a thieving society and the crew of a ship. They also discover a connection between the same crew and a string of museum robberies their father, Fenton, is investigating.

Answer: Midnight

In "What Happened at Midnight", Frank and Joe help their father with a case involving a mad scientist and his new invention: some kind of transistor radio. The brothers hide the radio in their car, but Joe disappears when he catches a strange man searching the car.

Answer: Chums

In "The Missing Chums", Frank and Joe investigate a bank robbery. The bank robbery is actually just one of several small mysteries they have to solve in this book. The novel's other main mysteries involve the disappearance of the brothers' friends Chet and Biff, and the theft of Frank and Joe's boat, Sleuth.

Answer: Arrow

In "The Sign of the Crooked Arrow", Frank and Joe investigate a mysterious case of a brand of cigarettes which have been causing people to blackout. They take the case at the request of their cousin who lives in New Mexico.

Answer: Feather

In "The Yellow Feather Mystery", Frank and Joe help their friend Greg find the latter's grandfather's will. Greg has been expecting to inherit his grandfather's school called Woodson Academy, but without the will he cannot inherit it.

Answer: Mark

In "The Mark on the Door", Frank and Joe, their father and their friend Chet head to Mexico to investigate a mysterious man who stole a boat. While there, they come across a small town whose citizens have been disappearing. The front doors of the missing people's homes all have a strange mark that was not there prior to their disappearances.