Henry's mysterious anonymous caller confronts him by framing him for a murder. With the police closing in he is faced with the prospect of having to either leave town or confess his true nature to everyone.

A murder opens the door to a hoard of Nazi secrets and the return of an old enemy.

When the owner of a treasure hunting salvage company is murdered, the investigation leads Henry and Jo on a chase to find the missing ship’s gold and the killer.

Henry tackles the most important case of his career: the disappearance of the love of his life, Abigail, after she left him. Desperate to find out where she might have gone, Abe, unbeknownst to Henry, secretly contacts Lucas to help find clues to her whereabouts. Already involved in a murder investigation with Jo, Henry involves Lucas and the team of detectives under the guise of searching for “Abe’s mother” — never letting on his own relationship with Abigail. Henry and Abe’s anxiety is ratcheted up as one terrifying domino falls after another until Henry uncovers the horrifying details of Abigail’s last secret.

Henry and Adam have been on a long, unrelenting collision course, which is about to come to a head – possibly bringing about one man’s death – with only Jo standing in the way. Henry and Jo’s murder investigation into a museum worker’s death centers on a priceless missing ancient dagger, which not only ended the life of Julius Caesar, but also killed Adam the first time. Meanwhile, Adam knows that there is something that Henry fears more than death – that Jo might discover his mystery. The two men tangle in a tumultuous game-changing confrontation. But at long last, will Jo finally learn about Henry’s secret?