The Masqueraders Series: Books 1 - 5 — Laura Parker

Five scorching-hot, suspense-filled, historical romances from “a most inventive storyteller” where deceit hides forbidden love -- until the disguises come off (RT Book Reviews).
 
In Caprice, a young widow decides on a lark to disguise herself as the mysterious Princess Soltana El Djemal -- only to catch the heart of a dashing Lord who vows to discover her true identity.
 
In Mischief, a bold young woman falls for an infamous spy while escaping Persia in 1808, but it's when she sees him again in England that the real adventure begins.
 
In Beguiled, a mysterious man and a desperate heiress set out to con the upper crust of nineteenth century New York -- but the games they're playing against each other are far more dangerous.
 
In Emerald and Sapphire, a French nobleman's secret double life as a thief is revealed -- by the only woman capable of stealing his heart.
 
And in The Gamble, a viscount masquerades as a notorious highwayman, only to discover that a woman's heart is the hardest jewel to steal.
 
“Laura Parker's innovativeness and beautiful style of writing keep her a head above the rest.” -- Affaire de Coeur