- Season 4 - Episode 18 - Admissions Episode:

Season 4: Episode 18 - Admissions

Admissions: Following a ritzy private high school dance, the body of a guidance counselor is found with his face melted off. Through the science of Photosynth, make-up and mace, the CSIs find their perpetrator. It's one of the students who attended the dance. When the team tracks him down they come upon a disturbing discovery: The youthful looking student is not eighteen, rather in his thirties.  He has been working in collusion with another predator to lure unsuspecting coeds into their lair culminating in the ultimate betrayal.  Meanwhile, Mac gets pressure from above to catch the “Cabbie Killer” as the killer starts hunting his next victim.