The Line (Unabridged‪)‬

Suspended in the nothing between timelines, the station Janus is an unseen marvel: the greatest technological achievement in human innovation. From Janus, Gustavo and his hand-selected team of historians and engineers venture into the past and observe history, unseen and unnoticed.

But they are not alone.

Another traveler is shattering history. Unhindered by desires to remain scientific and uninvolved, the intruder’s technology is far advanced, with methods more brutal and a present more terrifying than anything Gustavo and his team are prepared for. As they apply their intellects and skills towards solving the mystery of the ferocious interloper, they discover that they have its full attention.