Africa, 1888. Trying to forget the past that took her best friend and her mother away, Sonnet Gray busies herself with helping to build a hospital, while at the same time taking care of a precocious child. Together with Israel Rhode, the one man she can trust, their safe haven is discovered by an old enemy who needs Sonnet to get back to where he came from.

London, 1931. Bedlam Asylum has never been a safe place, and Rose Gray isn't getting any better. Consumed with rage and insanity, Rose isn't the only Gray who has learned to control her ability to travel through time.

From the dark alleys of Jack the Ripper to the Spice Islands of Zanzibar, Sonnet and Rose make their way through the eras. One is controlled by love, the other by revenge, but only one of them will be strong enough to end their story. The other will simply remain lost.