The most dangerous assassin is the one you cannot see.

Jacynda Lassiter’s latest assignment is a no-win situation: find Harter Defoe, the greatest of all Time Rovers, and return him to the future against his will. After he attempts an assassination at
a posh Victorian dinner party, Jacynda  is given an ultimatum—capture Defoe or spend the next decade in prison as punishment for her failure.

When her mission is threatened by the shape-shifting Transitives, history veers on a new and dangerous tangent. To save herself and preserve England's future, Jacynda Lassiter must  find a way to navigate through two centuries of intrigue to thwart an invisible evil.