One note about this scene and how it's shot: Clay has the light from a window shining on his face, while Tara's in the shadows. It is exquisite staging, because it shows how, in this scene, Clay is being completely honest about what his motivations are and Tara is clinging to the notion that she's justified in lying (by omission) to Jax. I am wondering if this scene is meant to illustrate one more step on Tara's road to becoming the next generation's Gemma, choosing to keep some secrets in the dark because of her need to keep her family intact.
Clay wants the letters, and Tara says, "If you're so sure I'm not going to give the letters to Jax, why do you need them?" Clay grins and says, "Peace of mind. I want to be able to sleep at night. You can understand that. You give me the letters, I destroy them, you and Jax leave with the boys, everybody's happy. And safe." Tara asks, "And if I don't give them to you?" Clay says honestly, "I'm not sure you and Jax ever make it out of Charming."
Gemma continues sprinting -- in her heels, no less -- and runs right into Clay as he leaves Tara's room. He looks at Gemma, registers her expression, then says, "She's fine" as if he's wounded to the core by the very thought of Gemma suspecting otherwise. Gemma pauses, then calls Clay's name. He stops. She tells him, "Opie found Piney. He's certain you're the one who killed him." Clay wants to know how Opie came to that conclusion. Gemma shrugs, "Doesn't matter. Cold-bloodedness of how Piney went, history of you killing Donna. I'd watch your back. Opie will want a settled score." Clay looks at Gemma with a lot of love and regret, and nods in acceptance of what she's telling him. Gemma is cold and calm as she leans forward, takes Clay's face in her hands and says, "I love you, Clay." She kisses his cheek, then walks away. It feels like a good-bye. As Clay watches her go, he looks as it feels that way to him too.