Sep 21, 1956 - 30m
Frank and Joe Hardy introduce their new mystery.
Sep 28, 1956 - 30m
Iola's purse is stolen, and Frank and Joe track the suspected thief onto Silas Applegate's property. They spot Silas' plumber and hired hand before Silas comes out and orders them off the property.
Oct 5, 1956 - 30m
Rumor of hidden treasure belonging to old Mr. Applegate spurs a summer-long investigation by the Hardy Boys
Oct 12, 1956 - 30m
Joe finds Perry hiding in some bushes. Perry gives Joe a gold doubloon and asks him to hold it, then turns himself in.
Oct 19, 1956 - 30m
The boys find a stash of stolen items from the community in Perry's living quarters. Though he is innocent of the thefts, Perry runs away to avoid capture by the police, when Joe stumbles upon his hiding place and learns the truth.
Oct 26, 1956 - 30m
Rumor of hidden treasure belonging to Old man Applegate, spurs a summer long investigation by the Hardy Boys
Nov 2, 1956 - 30m
The Boys go looking for treasure, and end up inside Applegate's house.
Nov 9, 1956 - 30m
Applegate relates to Frank and Joe how he got the gold and how it was stolen.
Nov 16, 1956 - 30m
Someone digs up Applegate's garden to get Frank and Joe in trouble.
Nov 23, 1956 - 30m
While Frank and Joe wait for their father to get home, Iola goes to the Applegate house to retrieve the pick and shovel.
Nov 30, 1956 - 30m
Hiding from Applegate in the tower, Iola finds Jackley unconscious and tied up. Her screams brings Frank, Joe, and Fenton running.
Dec 7, 1956 - 30m
Fenton discovers Boles, the former gardener, hiding in the tower. The Hardys capture him.
Dec 14, 1956 - 30m
Frank, Joe, and Fenton search Boles apartment while the prisoner taunts them.
Dec 21, 1956 - 30m
Joe traps Boles into a partial confession.
Dec 28, 1956 - 30m
The Boys find a clue they think will solve the mystery of the Applegate treasure.
Jan 4, 1957 - 30m
The authorities look for the treasure in the tower.
Jan 11, 1957 - 30m
The Hardy bunch and police tear apart Applegate's tower structure looking for the stolen treasure.
Jan 18, 1957 - 30m
Frank and Joe spend a day following Boles after he is released from jail - and get another idea of where the treasure is hidden.
Jan 25, 1957 - 30m
Frank and Joe decide to follow Boles after he is released from jail.
Feb 1, 1957 - 30m
The Boys follow Boles back to his apartment but what they see from there leads them to deduce the location of the hidden treasure and bring the case to a conclusion.
