The Hardy boys and the gang embark on a daring mission to finally uncover the truth...but in revealing the truth, could they unleash a dark power beyond their control? ...

Gloria reasserts old power. Fenton is stunned to see his sons in the middle of secrets that he, too, has uncovered. Frank enters an uneasy alliance, and climactic events ...

Trapped and lost, Biff and Joe's friendship is tested. Frank can only help find them by revealing too much to people he can't trust. ...

Taking a step farther than their mother did and learning the nature of the object at the heart of the mystery, Frank and Joe's unity fractures over what to do next. Tensi ...

Frank and Joe exchange truths with their Grandmother and find a long-hidden secret in her home. Fenton finds what he's looking for. Meanwhile, other forces work against t ...

The boys head back to school, but Frank and Callie have different takes on the new girl. Frank learns more about young Laura, while an old friend returns to offer Joe inf ...

Frank and Callie look behind the veil at Rosegrave Prep and learn that Laura's investigation started in high school, while Joe tries to prove their conspiracy has a local ...

One last mystery holds the key to saving the world, and Grace must choose how she spends her final days. ...

Harris, Grace and Darius must topple the illegitimate government, and Darius makes final plans for the ark. ...

Darius, Grace and Harris join forces to prove the president was murdered. Also, Grace tells Zoe the truth. ...

Grace and Harris must forge an alliance when their children's lives are in jeopardy. Also, Liam presents Jillian with an unusual proposal. ...

Grace and Darius seek answers from the President and Harris discovers deadly secrets. ...

An assassin threatens Grace's life. Unlikely alliances are forged. ...

Darius and Grace are framed for murder and captured by the FSB. Liam tries to woo Jillian back to Tanz Industries. ...

Darius and Grace slip off to Russia to try an head off nuclear war. Liam finds solace with Amanda. ...

Darius recruits Grace, Harris and Liam for a dangerous mission, and Jillian confronts Liam about his secret. ...

In order to prove to Harris and Grace that he's not a traitor, Darius must reveal one of his most closely guarded secrets. Also, Liam helps Jillian adjust to her new job ...

To prove to Harris and Grace that he's not a traitor, Darius must reveal a closely guarded secret; Liam helps Jillian adjust to her new job at Tanz. ...

It's a race against time as Darius must accelerate his plan to stop the asteroid before the Pentagon shuts him down. Also, Grace has to make difficult decisions that coul ...

Darius and Liam work to invent a theoretically impossible piece of technology to divert the asteroid, and Grace risks everything to help Darius. Also, Liam heads home to ...

When MIT grad student Liam Cole (Charlie Rowe) discovers an asteroid is set to collide with Earth in 186 days, he joins forces with tech billionaire Darius Tanz (Santiago ...