Mason is book 2 in the Double Deuce Series by Kathi S Barton. 
 Mason is brother to Jace and is a cougar shifter. He has been helping his neighbor Landon McBride with the ranch as they are beside each other and its the neighborly thing to do. Old Man McBride jokes one day about Mason buying him out or marrying his daughter and it will all be his - its not really a joke but when Mason finds out how big the ranch is he knows he would never be able to buy it. When Mason meets Mr McBride's daughter, Emma, he knows that she is his mate and he can't fight it. Find out how things go when Emma's brother who thinks everyone owes him because he is a McBride steps in and tries to hurt everyone including his father and mother. This is a definite must read and would recommend to everyone.