Wicked Promise by Kat Martin

A Lady's Desperate Choice
When the loathsome Lord Bascomb tries to force her into marriage, Elizabeth Woolcot, against her will, must applea to her influential guardian. Nicholas Warring, known as the Wicked Early, is a darkly handsom charasmatic figure--with the power to save her but a past that could put her reputation dangerously at risk. A ruthless womanizer, he has also been convicted of murder--and barely escaped hanging.

A rogue's tainted honor
Elizabth can't help her attraction to the man who haunts her dreams--nor he his hunger for her. But she knows it can never be. For Nicholas is a married man. Then a heinous crime shatters their lives--and Nick is the natural suspect. Elizabeth wants to believe in his innocence more than life and love itself--but can she trust a man who has killed before?

Perfect Sin by Kat Martin

PERFECT PLAN

He was the ultimate rake.
But Randall Clayton, 7th Duke of Beldon, harbors a hidden motive for seducing the fiery haired, passionate Caitlin Harmon. Rand is on a mission to find a murderer...and it's leading straight to Caitlin's father.

PERFECT SEDUCTION

She was the ultimate temptation.
Cait Harmon, the feisty, intellectual daughter of an American adventurer, is certain she will never fall in love. But one dance with the powerful, compelling Duke of Beldon and Cait's heart is lost forever.

PERFECT SIN

Theirs was the ultimate love.
They were the talk of London, until passion and betrayal tore them apart. Now Rand must embark on the quest of a lifetime: proving to Caitlin that love is the most powerful treasure of all.