It depends. If you have not previously filed a writ of habeas corpus, there is at least a chance you can pursue one alleging newly discovered evidence. It's more complicated than that, though. It's a long and expensive process to do it correctly. But, if you have "new" evidence, it is at least worth sitting down with a writ lawyer to discuss it.
Answered on Feb 29th, 2016 at 10:08 AM