After McGarrett's CIA agent friend is killed, he lets himself be captured by the group he thinks is responsible to find the killer; Tani questions whether she should tell McGarrett about the murder weapon she found at Adam's house.
A hit man McGarrett's father failed to arrest comes to McGarrett to finally confess his crimes and admit where he buried his victims; Jessie makes a dangerous decision that could ruin Adam's life.
Emily, Aiden and Nolan work to uncover the Fa1c0n's true identity and stop the Initiative; Emily struggles with her future; Victoria deals with issues after a revealing interview.
Aiden struggles with Emily and Daniel's engagement; Jack makes a discovery; Victoria's big reveal impacts Conrad's campaign.
When the Dobermans dig up what appears to be a human bone, Magnum and Higgins help Katsumoto investigate the murder of his former mentor.
