The Mistress by Susan Wiggs

Chicago, 1871
A nighttime rendezvous, a secretive masquerade, and a city engulfed in flames…
Most days, Kathleen O’Leary is a penniless maid. But tonight, she takes a risk and masquerades as a glamorous heiress, thanks to a borrowed gown and her friends’ sense of adventure. To her surprise, the ruse succeeds—even Dylan Kennedy, Chicago’s most eligible bachelor, seems enraptured.

But like Kathleen, Dylan isn’t who he says he is. And before their true identities can be revealed to one another, fire erupts, sending rich and poor alike running for their lives. Now, though virtually strangers, Kathleen and Dylan must rely on each other for survival. And when the embers cool, they’ll find that the greatest risk has been to their hearts….

As hidden identities are unmasked, sparks begin to fly in this thrilling historical romance from #1 New York Times bestselling author Susan Wiggs.
Previously published.