There are three things you need to know about the Collins twins: 1) One is falling in love, 2) One is getting married, and 3) You’re all invited to the party. Anna knows what she wants and she doesn’t hesitate to go after it. Adventure is her passion, and a wedding is just an excuse to gather with friends and family. Colette loves “events,” and wants her sister to have the biggest and best. But Anna doesn’t care about how things look, and Colette cares too much, especially where Sterling Gray is concerned. Will this celebration tear the sisters apart? Or will it end in twin happily-ever-afters? Code of Matrimony is book number 2.5 of the Cipher Security series, and can be read as a standalone, though the author doesn’t advise doing so.