ATAC briefing for agents Frank and Joe Hardy. Mission: Investigate the murder of Evan Davis, a runaway teen who was pushed off a subway platform. Location: New York City. Potential victims: Other teens living at the Haven, a shelter for runaways in the city. Suspects: Everyone from another resident of the shelter who ended up with Evan's jacket to Evan's own dad, a politician who wanted to keep his son a secret.

Nancy and Ned look for the thief of several official legal documents in order to help River Heights resident Evaline Waters keep her home when a large corporation demands her land for a new warehouse.

When a powerful new solar energy cell is invented and a company employee turns up dead, Frank and Joe discover the dark secret behind the solar power source.

Natalie and her friends make a pact not to tell about being involved in a hit and run accident on the way home from a party, and it's no coincidence when those same friends start dying in strange circumstances.

The Hardys visit the Hawaiian Islands to join a scientific research project. During a solar eclipse, the project leader is murdered. Frank and Joe must find the murderer before more violence occurs.

After graduating from a private high school in Baltimore, Annie comes to terms with the loss of her sister who had been murdered two years earlier.

After the Hardys discover who is counterfeiting rap artist Randy Rand's CD's, the con man turns up dead and Randy is charged with murder.

Joe's girlfriend introduces him to her friend Brett Cooper. Brett is targeted for murder, and the Hardy Boys must dig into the past of the new mysterious friend to find out why.