Should Pennsylvania execute Terrance Williams?

A judge will decide on Friday:

http://www.post-gazette.com/stories/local/state/judge-to-rule-by-friday-on-execution-of-terrance-williams-654888/

As a general proposition, I favor the death penalty in egregious cases.  But is this one such case?  It now appears that

1.  Williams was abused for years by the guy he killed, and

2.  Evidence that supports this claim was withheld from the defense, the courts and the media for years.

Related articles

• Pardons board could be last hope for Terrance Williams, as his Oct. 3 execution date nears
• Williams v. Williams
• Push to shut down Pennsylvania's death row focuses on man who killed his sexual abuser
• Terrance Williams' lawyers make final stand
• Convicted murderer Terrance Williams will get a new hearing in his effort to avoid execution
• Justice, Terrance Williams and the Death Penalty
• Breaking - From Prisonmovement's Weblog - PA Rejects Clemency in Terry Williams Case
• Governor Corbett Ready To Proceed With Convicted Killer's Execution
• A Plea for Mercy for a Murderer in Pennsylvania
• New York Times' coverage of Terry Williams' case