I have to start with my usual caveat about hating the cover. If I were Queen of the Publishing Industry, no cover in any genre would be approved unless everyone on the editing, design, and marketing teams could honestly say they'd be perfectly comfortable reading the book on a plane, a bus, the cafeteria at work, in front of elderly parents and young children, etc. It's easily possible to make a cover that's romantic, even sexy, that's still tasteful. This, IMHO, isn't it.
Loving a Lost Lord (Mary Jo Putney, 2009) is the first in a new historical romance series about childhood friends known as the "Lost Lords" because they met at a school for aristocratic problem children. The story opens with several of the friends coming together to search for one of their number, the Duke of Ashton, who is missing and presumed lost at sea. He isn't, of course--he merely has amnesia and thinks he's married to the lady who found him. If that sounds a bit over-the-top, it is, and to enjoy this book you need to be in the mood to embrace the OTT--besides the amnesia, it's got murder attempts, long-lost relatives returning from the supposedly-dead, etc. And it has a certain degree of prequelitis, with multiple friends of the hero clearly being set up for their own stories. I wouldn't recommend it for anyone who's never read Putney before--my favorites of hers are One Perfect Rose and Shattered Rainbows--but if you're already a fan, you'll enjoy the start of a new series.