Oath of Honor by Lynette Eason

Police officer Isabelle St. John loves her crazy, loud, law-enforcement family. With three brothers and two sisters, she’s never without someone to hang out with–or fight with. And she knows they’ll be there for her when things get tough. Like when her partner is murdered and she barely escapes with her own life.

Determined to discover exactly what happened, Izzy’s investigation sends her headfirst into a criminal organization, possibly with cops on the payroll–including someone from her own family. With her dead partner’s handsome homicide detective brother Ryan shadowing her every move, Izzy’s head is spinning. How can she secure justice for her partner when doing so could mean sending someone she loves to prison? And how will she guard her heart when the man she’s had a secret crush on for years won’t leave her side?