he said he did. >> false memories happen to us all the time. it's not a lie. it's just a memory that happens to be incorrect. >> reporter: but no expert could help the jurors understand how fred truly felt about his wife of almost 27 years. to wrap up their case, the defense brought up fred's family to talk about how happy the muellers had been. >> did you observe anything that led you to believe your folks were having difficulty in their marriage? >> no, never. >> reporter: leslie's mother, ginnie, again defended fred. >> i've always had a good relationship with fred. >> reporter: but the prosecution's ears perked up when she offered a new detail about her son-in-law. >> yeah, fred is very successful. he could sell anything. he's a wonderful salesman. >> reporter: in final