The duke's counterfeit wife

When their ship is commandeered, Nicholas Terrell, Duke of Severton, saves stranger Sarah Parrish by claiming she's his wife! She's more valuable if their captors believe she'll bring them a duchess's ransom, but now Nicholas is compelled to share a cabin with his distractingly beautiful faux bride... Outspoken Sarah enchants him like no débutante ever has. Yet, as a lady's companion, Sarah's completely unsuitable for a duke. So surely a real match between them is impossible?