By Tony Maglio Amy Bradley Is Missing, but the docuseries’ director Ari Mark believes he is closing in on her whereabouts. Even in light of new information, Mark is not quite ready to pitch Netflix on an epilogue episode — not yet. “I mean, look, I’m very careful about the things that I present to people like Netflix, right? I’ve sort of spent my career being really careful about what I want to stand behind, you know? However, I think the moment that I feel like we’re at this tipping point where, if we could just push out a little bit more information we really could get this thing solved, I will 100 percent approach them about that,” Mark told The Hollywood Reporter. “Creatively speaking, I don’t think Netflix [goes] for low-hanging fruit in that way, and I don’t love going for low-hanging fruit.…