Moonglow by Kristen Callihan
Daisy Craigmore, nee Ellis - she's always hated her married name - is finally free. Her elderly husband has died and while she would never wish anyone harm, his death is a light at the end of a very dark tunnel. Forced into this loveless marriage, she nevertheless tried her best to behave and be a faithful, good wife. Now? Now she wants to have fun. Daisy sets about living a life of debauchery, visiting gaming halls, risque shows - places that until now have been forbidden. She has the time of her life until she stumbles onto a brutalized corpse in a dark alley. Ian McKinnon found the one woman to stir his blood, only to lose her to his oldest friend and greatest enemy, Lord Archer. Now the devil has the temerity to accuse him of slaughtering innocents. As part of an ancient lineage, his kind has always been derided but the werewolves live under a code, never kill the humans and never let the beast take total control, for once lost, the human side of them may never return. Now one of his kind is running amok in London. Exiled from his clan and living as a lone wolf, he ought not to care, but his sense of honour forces him to investigate. Daisy knows she should stay away from Ian but the temptation is too much and the more she is with him, the more she can see how much chasing the rogue werewolf is affecting him. Mckinnon's control on the beast within is slipping. When the rogue werewolf sets its sights on Daisy in an effort to hurt Mckinnon, they both have to decide if what started as a dalliance is worth sacrificing, or worth giving up for love.