When new team members are being kidnapped and threatened, Frank and Joe join the basketball team at the request of their principal to uncover the culprits.

When television wildlife celebrities Jumpin' Jack and his son bring their menagerie to Bayport Elementary, Frank and Joe are on the case for a boa constrictor that goes missing.

Frank and Joe Hardy suspect that their best friend Chet Morton is the victim of a summer school swindle and offer to help get his money back; while probing a baffliong burglary at the Seneca Indian Reservation in New York State they investigate Zoar College located nearby.

Frank and Joe investigate a hazing incident at Eagle River Academy which might be connected with a death.

Frank and Joe investigate when Joe and another student at Bayport High are accused of stealing a copy of a new statewide test.

Frank and Joe investigate suspicious accidents at a private boarding school in New England.