Billy Grimm, a self-made man presumably, at least in the name department, and a motorbike gang leader looked to Beckett and Castle, at least for a time during "Almost Famous", like the killer of Derek Brookner, a man who had played him on "America's Most Dangerous Criminals". Sadly, it turned out that Billy was not guilty of murder, or even extortion, in this case, as his girlfriend had, without his knowledge, "suggested" to Derek that a $25,000 donation might stop Billy taking some other form of payment for Derek's role in his imprisonment.