was truth serum used in james holmes trial?
James Holmes, Aurora theater shooting suspect, sits in the courtroom during his arraignment in Centennial, Colo., on Tuesday, March 12, 2013. Photo by R.J. Sangosti/Pool/ Denver Post /AP. A Colorado judge has approved the administration of âtruth serumâ to accused mass killer James Holmes, should he plead insanity. The unspecified drug would be used to assess Holmesâ state of mind at the time of the shootings and potentially reveal whether he is faking mental illness.