Keira Knightley seems to make period film after period film, and “The Edge of Love” doesn’t break the trend. In it, she and Sienna Miller play two women loved by the famous poet Dylan Thomas. The movie is out in very limited release in the U.S., but we think it looks worth Netflixing for a few reasons: 1) Lindsay Lohan was originally cast in the role Sienna plays, and we’d like to imagine how the train-wreck would have played it. 2) A first, we didn’t even recognize Sienna Miller. She had to put on a little weight for the role, and she looks lovelier than ever. 3) Matthew Rhys, aka Kevin Walker on “Brothers & Sisters,” plays Dylan Thomas. 4) Cillian Murphy and his baby blues.