add in the drugs-- how much did drugs play in tom toolan's life? he could get his hands on. such as? methamphetamine, benzodiazepine, paxlovid, zoloft. hoda kotb: there was more. the defense revealed that toolan had spent years fighting depression and obsessive compulsive disorder, that in the late '80s, he'd attempted suicide. and finally the defense was ready for its knockout punch. a neuropsychologist. my opinion is that he has profound frontal executive dysfunction. hoda kotb: davidoff testified that years of substance abuse had brought about that mental defect. because of it, toolan could not control his impulses, and so the defense argued he could not be held criminally responsible for the murder. it's like the perfect storm. you have the frontal lobe defect, a person's 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 exac