Character Frank Fox (Pearce Quigley), who is lodge in Broadmoor, a facility for the criminally insane, says he is taking Seroxat, which is an antidepressant. Since Frank is supposed to be suffering from paranoid psychosis, he would probably be on an anti-psychotic, not an antidepressant.
When the guys are following Sandra, and not wanting her to know, their car's dome lights are on.