Lou Shaw Creator Glen A. Larson Creator Jack Klugman Dr. R. Quincy Actor, Writer Garry Walberg Lt. Frank Monahan Actor Robert Ito Sam Fujiyama Actor Val Bisoglio Danny Tovo Actor John S. Ragin Dr. Robert Asten Actor Joseph Roman Sgt. Brill Actor Lynnette Mettey Actor Jo Ann Pflug Marsha Guest Star Raymond St. Jacques Dr. Charles Martin Guest Star Peter J. Thompson Executive Producer Steve Greenberg Writer Robert Crais Writer David Moessinger Writer Patrick Mathews Writer Erich Collier Writer Aubrey Solomon Writer James Rosin Writer Paul Krasny Director Pat Fielder Writer A.L. Christopher Writer Ron Satlof Director Ray Danton Director Tony Mordente Director Corey Allen Director Harvey Laidman Director Kenneth Gilbert Director