Throughout the trial, the defense attorney, Maureen Rowland, a public defender, made active use of cross examination in an attempt to raise doubts about the case presented by Assistant State’s Attorney Jennifer Brady, but Ms. Rowland did not call any witnesses of her own. Still, her closing argument left us with some things to think about. Was evidence presented from Mr. Williams’ initial interrogation with the homicide detectives, which stretched from 5:45 p.m. on the day he was arrested until 3 a.m., truly voluntary and uncoerced? It was hours into that interview that — after a multitude of lies — Mr. Williams admitted to the shooting during the carjacking and to being present with Mr. Parker at the other two killings, though he claimed Mr. Parker was the shooter in those cases. And even if we accept that evidence, does that necessarily make Mr. Williams a participant in those crimes, or was he, as he said at some points in the interview, afraid of Mr. Parker and worried about retaliation against him and his family if he didn’t go along with him?