Colton's Twin Secrets by Justine Davis

Officer Dante Mancuso pursues justice with only the company of his K–9 partner. But when tragedy strikes, the bewildered bachelor winds up with custody of his infant nieces. Desperate for help, Dante hires heiress Gemma Colton to help him care for the little girls. But as they grow closer while caring for the babies, shadows from their respective pasts begin to threaten their growing bond.