The Alpha’s Mark by Sassa Daniels

She will be bred, but first she must be mastered.
Finlay MacDonald is the last alpha of his bloodline, and he is in need of a mate. She doesn’t know it yet, but beautiful college professor Maddie MacKinnon is destined to be that mate.
Upon seeing the woman who will bear his pups being accosted by a man with a knife, Finlay knocks her attacker out cold, but it will take more than a display of gallantry to convince Maddie to accept his protection and submit to his demands. She will need to be stripped bare, spanked until she is sore and soaked, and then taken so savagely she is left in no doubt he is her alpha.
She is going to be claimed, marked, and bred, and she will come when he calls her or be sternly and shamefully punished. The only thing up to Maddie is how long she tries to deny her need to be mastered.