This Blindfaith Theatre mounting of Miguel Pinero's raw 1974 prison drama is only marginally better than Urbantheater Co.'s failed production a few months ago. But that small margin makes a significant difference. Nicolas Minas's more precise direction clarifies interactions that were garbled by Urbantheater, conferring a necessary touch of human pain on the story of a child molester's brief, exceedingly unpleasant day in prison. While Minas and company don't come anywhere near encompassing Pinero's world--especially on a political level--they nevertheless put on a respectable, fitfully affecting show. And Arch Harmon's performance as an easygoing volcano of a convict called Ice is much more than respectable. It's magnetic. Through 10/15: Thu-Sat 7:30 PM, Sun 3 PM. Storefront Theater, Gallery 37 Center for the Arts, 66 E. Randolph, 312-742-8497. $15.