This is definitely one of the most egregious cases of prosecutorial misconduct that you'll ever see.
We last saw former death row inmate Justin Wolfe in May 2013, when the Fourth Circuit reversed the district court's order preventing the state from re-prosecuting Wolfe for a murder-for-hire. The district court's order came after Brady violations in the original trial, a defied habeas judgment that ordered the state to retry or release Wolf within 120 days, and a wee bit of witness intimidation.
The Fourth Circuit, while sympathetic, held that federal district courts lack the power to bar state courts from re-prosecuting. Wolfe is hoping that the Supreme Court feels differently.