 Some have tried to avoid these lingering problems for compatibilists by arguing that the freedom to do otherwise is not required for free will or moral responsibility. What matters for an agent’s freedom and responsibility, so it is argued, is the source of her action—how her action was brought about. The most prominent strategy for defending this move appeals to ‘Frankfurt-style cases’. In a ground-breaking article, Harry Frankfurt (1969) presented a series of thought experiments intended to show that it is possible that agents are morally responsible for their actions and yet they lack the ability to do otherwise. While Frankfurt (1971) took this to show that moral responsibility and free will come apart—free will requires the ability to do otherwise but moral responsibility does not—if we define ‘free will’ as ‘the strongest control condition required for moral responsibility’ (cf. Wolf 1990, 3–4; Fischer 1994, 3; Mele 2006, 17), then if Frankfurt-style cases show that moral responsibility does not require the ability to do otherwise, then they also show that free will does not require the ability to do otherwise. Let us consider this challenge in more detail.