There's no statute of limitations for murder, as evidenced by this wanted poster for accused cop-killer Ronald Stanley Bridgeforth. To the best of our knowledge, the poster is still hanging at Park Station in the city -- though Bridgeforth is accused of masterminding the murder of Sgt. John Young nearly 38 years ago. Intriguingly, Bridgeforth remains outstanding while eight of his alleged former Black Liberation Army accomplices were arrested two years ago for Young's slaying. Doubtless the fact