Code of Justice (Steeple Hill Love Inspired Suspense) by Liz Johnson

"Follow the drugs." Her sister's last words shake FBI agent Heather Sloan to the core. They also convince her that the helicopter crash only Heather survived wasn't an accident. Sheriff's deputy Jeremy Latham is assigned the case--he's the one who can help Heather find the person responsible...once she convinces him they should work together. As they dig for the truth, they learn to trust and care for each other. Will they lose it all when the killer targets Heather? She's willing to risk her life to find her sister's killer--but her code of justice could cost her the chance to win Jeremy's love.