There is no rule book for creating, implementing and sustaining a successful social intervention. Hundreds, if not thousands, of now-defunct social programs attest to this reality. These programs may have succeeded in identifying a social need, a cogent and sometimes creative way of meeting that need, and some capacity (both financial and operational) to launch the effort. These are necessary elements -- but not sufficient ones. The social policy field does not consistently recognize or reward good ideas. Success is often as much a product of unusual circumstances -- confluence of the right time, the right idea and the right people -- as it is a result of inherent program quality and effectiveness. The Amachi program is a prime illustration of the unpredictable nature of success in the social policy arena. Its success resulted from a nearly unique blend of factors -- Public/Private Ventures (P/PV), which had been studying the issue of relationships as a way of helping young people for almost two decades; the Pew Charitable Trusts' interest in the potential of faith-based organizations to meet social needs; the well-known academic John DiIulio, who was looking for practical ways to put Pew's interest into action; a source of stabilizing program knowledge (Big Brothers Big Sisters of America); and finally a leader, W. Wilson Goode, Sr., whose combination of personal contacts, managerial knowledge and experience, and dedication to the idea of Amachi was decisive in making the program a success locally, and later nationally. Politics also played a role: the election of a president (in 2000) interested in faith-based initiatives; DiIulio's role in steering the president's attention to Amachi during its early days in Philadelphia; and the way that attention led to a sustained national focus (with federal program funding) on the target group Amachi was designed to serve: children of prisoners. The interplay of these factors -- along with good luck and good timing -- is in many ways the core of the Amachi story, which is detailed in the pages that follow.