columbo be guest lecturer for a criminology class . the student invite him along for their after class get together . transit the nearby parking garage and they discover their regular teacher and next to his car and dead from a gunshot wound . ( no and columbo be not after the man job . ) a a class project and columbo involve the student in his sleuthing . two student and tentatively identify by the viewer a culprit and be in the lecture hall for the entire class . furthermore and surveillance camera tape of the parking garage show that no one other than the professor enter or leave after he be last see unexpectedly depart the lecture hall . reverse the normal routine and columbo be the one that be pester by the evil ( . ) duo and eager for progress report and an ear for their theory . forensic evidence be almost nonexistent . solution of the case hinge on some eventual and interesting good luck . on first viewing and it seem that columbo have swallow whole the culprit misdirection while however and on repeat viewing and small detail reveal that not to have be the case at all . this reviewer have yet to tire of columbo go to college .