Sophie Arundel is stranded in history, stuck in a grand house in 1925 England. Thankfully, she has her faithful dog with her. Oh, and fellow student Hugo: fit, privileged, and annoying.

Baffled by upper-class rules, courted by boring suitors, Sophie is desperate to get back to the twenty-first century, but the only way home is through a hidden portal — and to unlock its secrets, she must work with Hugo.

As one clue leads to another, Sophie and Hugo discover that history is unfolding differently. Mobs rule the streets. And when chaos turns into a deadly revolution, anyone in a grand house is fair game.

Sophie and Hugo are running out of time...