After his Kansas convictions, Robinson faced additional murder charges in Missouri, based on the evidence discovered in that state. Missouri is far more aggressive in its pursuit of capital punishment convictions (Kansas has not executed anyone since reinstating its death penalty statute in 1994), and Robinson's attorneys were anxious to avoid a trial there. Chris Koster, the Missouri prosecutor, insisted as a condition of any plea bargain that Robinson lead authorities to the bodies of Stasi, Godfrey and Clampitt. Robinson, who has never cooperated in any way with investigators, refused, but Koster still faced pressure to make a deal because his case was not technically airtight⁠ ⁠— among other issues, there was no unequivocal evidence that any of the murders had actually been committed within his jurisdiction. Robinson, on the other hand, faced pressure to plead guilty to avoid an almost certain death sentence in Missouri, and failing that, yet another capital murder trial back in Kansas.