The murder of a janitor in a university laboratory building leads back to a student employee whose participation in a drug study may have prompted the crime.

Bill Cohen, D.C. Benny, Dan Ziskie, E. Katherine Kerr, Gene Canfield, Irene Ng, Jennifer Van Dyck, Jim Bulleit, John Bedford Lloyd, Larry Attile, Mark Bateman, Martin Shakar, Paul Geier, Randle Mell, Richard Hamilton, Robert Hirschfeld, Tom O'Rourke, Vivienne Benesch