This is a case about: (1) the State of Oklahoma's suppression of material and exculpatory impeachment evidence in its possession to evade the presentation and consideration of a complete defense and Federal question, and; (2) the due process requirements forbidding the retroactive application of a judicial interpretation of a federal criminal statute that (a) expanded the statute's scope and (b) eliminated a common law defense available at the time of the alleged conduct, both in an unexpected and indefensible way.

Whether the State of Oklahoma violated due process by suppressing material exculpatory evidence and retroactively applying an expanded judicial interpretation of a criminal statute that eliminated a common law defense