the murder, and that was just from the drinking, add in the drugs, how much did drugs play in tom toolan'sake whatever drugs he could take -- >> such? as >> methamphetamines, zoloft -- >> there was more the defense revealed that toolan had spent years fighting depression and ocd, in the left 80s he had attempted suicide. finally the defense was ready for its knockout punch. >> i would call doctor donald. >> a neuropsychologist. >> my opinion is that he has profound frontal executive dysfunction. >> he testified that years of substance a bruise had bought about that mental defect. because of it toolan could not control his impulses and the defense argued that he could not be held criminally responsible for the murder. >> it's like the perfect storm. you have the frontal lobe defect, a person is unable to control their emotions and the executive function, coupled with the lowering of the inhibitions through the alcohol, you have all of these swirling together inside this man's head. >> the prosecutor's job was to blow that argument away, to argue that tom toolan knew exactly what he's doing