The last episode of Fullmetal Alchemist: Brotherhood left us delicately poised on the precipice of some major action, and thankfully episode twenty-two doesn't disappoint by dropping us straight into the thick of things from where we left off last time.
Thus, we get to enjoy the openings of Ling Yao's battle with Bradley and Gluttony, while the Elric Brothers continue to face off against Scar in that particular struggle. This particular chain of events comes to its temporary conclusion however, as a wandering Winry walks into the thick of things just as Ed is confronting Scar about him killing her parents. Oops.
This state of affairs (with an unstable Winry threatening Scar at gunpoint) gives us ample opportunity for a flashback to the circumstances which led both to Scar being wounded in Ishbal through to how he was saved by his brother all the way to the reason behind killing Winry's parents, before closing out to scenes of Scar looking to make his escape while Ed comforts Winry.
Overall then, this proved to be another solid episode of Fullmetal Alchemist: Brotherhood - While the path of its progress was all pretty predictable, and for viewers of the original series the origins of Scar's tattooed arm was more of a recap than a new revelation, it did everything that it needed to and managed to blend its action with the more emotional side of things pretty well. You could argue for wanting more of that hot alchemist on alchemist action I suppose, but there's plenty of fight left in the scrapes which are currently on-going to satisfy your needs in future episodes.