Julia and Sienna Larkin are sisters-in-law, connected by Julia's husband and Sienna's brother, Jason. More than that, the two have been devoted best friends since Jason introduced them. To Sienna, Jason can do no wrong, and although Julia knows he's not perfect, they've built a comfortable life and family together. Recently, Jason has been putting in long hours to secure a promotion at work, so when his boss is found brutally murdered--his lips sewn shut--the Larkins are shocked and unsettled, especially as local gossip swirls. "