A Not So Respectable Gentleman?

WELBOURNE MANOR'S PRODIGAL SON RETURNS Since Leo Fitzmanning returned to London he's kept his seat at the card table warm, his pockets full of winnings and his mind off a certain raven-haired heiress. Until whispers at the gaming hell reveal that Miss Mariel Covendale is being forced into marriage with an unscrupulous fortune-hunter! Leo must re-enter the society he detests to help her, before returning to his clandestine existence.
But he hasn't counted on Mariel having grown even more achingly beautiful than he remembers. Soon Leo realises that there's nothing respectable about his reasons for stopping Mariel's marriage!