Silver Werewolf Trilogy Series by Mathilde Madden

An epic and fast-paced tale of lycanthropy and female werewolf hunters, set in the ancient university town of Oxford. When an ancient werewolf killed her brother and attacked her boyfriend, Iris vowed revenge against the Beast. Now she is head of the Vix, a shadowy organization dedicated to killing such creatures. But Iris’s boyfriend needs help. His body is fragmenting—the rules that govern his transformations into a wolf are changing... moreAn epic and fast-paced tale of lycanthropy and female werewolf hunters, set in the ancient university town of Oxford. When an ancient werewolf killed her brother and attacked her boyfriend, Iris vowed revenge against the Beast. Now she is head of the Vix, a shadowy organization dedicated to killing such creatures. But Iris’s boyfriend needs help. His body is fragmenting—the rules that govern his transformations into a wolf are changing. His only hope of keeping his deadly animal nature under control is the Silver Collar—an ancient artifact currently owned by the Vix. less

An epic and fast-paced tale of lycanthropy and female werewolf hunters... Every full moon, Iris kills werewolves. It's what she's good at. What she's trained for. She's never imagined doing anything else . . . until she falls in love with one. And being a professional werewolf hunter and dating a werewolf poses a serious conflict of interests... moreAn epic and fast-paced tale of lycanthropy and female werewolf hunters... Every full moon, Iris kills werewolves. It's what she's good at. What she's trained for. She's never imagined doing anything else . . . until she falls in love with one. And being a professional werewolf hunter and dating a werewolf poses a serious conflict of interests. To add to her problems, a group of witches decides she is the chosen one - destined to save humanity from the wolves at the door - while her new boss, Blake, who just happens to be her ex-husband, is hell-bent on sabotaging her new reltionship. All Iris wants is to snuggle up with her alpha wolf and be left alone. He might turn into a monster once a month, but in a lot of ways Iris does too. less

Iris and Alfie have been driven apart by the strongest forces in the werewolf world - the powerful thrall of the Divine Wolf - the mother of them all. Now Iris needs to win Alfie back, not just for herself, but because the fate of the world could rest upon it. But the only way to free Alfie from the power of the Divine Wolf is to kill her. Something that could end the lives of all werewolves. Including Alfie himself - Iris true love.