The trial focused entirely on a critical pre-trial motion concerning the admissibility of OJ Simpson's prior domestic violence against Nicole Brown Simpson. The prosecution called psychologist Dr. Donald Dutton to establish links between controlling behavior, estrangement, and spousal homicide risk. F. Lee Bailey delivered an aggressive cross-examination, systematically challenging Dutton's ethical standing to opine on Simpson and whether the facts matched batterer patterns. Judge Ito maintained pressure on both sides regarding the legal foundations for admissibility.

• Dr. Dutton testifies that estrangement increases spousal homicide risk by a factor of six
• F. Lee Bailey cross-examines Dutton using the expert's own professional framework and research against him
• Judge Ito presses prosecution on whether case law actually supports the 'estrangement theory'
• Defense delivers comprehensive legal opposition arguing domestic violence evidence should be excluded entirely
• Bailey reveals a lawyer's letter showing OJ refused to commit federal tax fraud, undermining economic abuse claims