Marvel’s Agent Carter has always been a show on a mission from her series’ debut, but this week, its leading lady is one on the run. A fugitive Peggy Carter was hardly an unlikely scenario in a world of super spies and similarly super soldiers, but far be it that Agent Carter should get comfortable showboating the inevitable. We’ve known that something was up at the Strategic Scientific Reserve and maybe something bigger in the greater Marvel universe still. A Sin To Err sees our favorite agent with nowhere to run to but the perplexing finale we seem to be building to. Call me intrigued and excited.