Van Heflin stars as the head of a city crime lab who tries to solve the murder of the town mayor by scientifically analyzing evidence.

"Crime under the microscope. Introducing Police chemist Gordon McKay."

Credits

Fred ZinnemannDirector

Van HeflinGordon McKay

Marsha HuntJane Mitchell

Lee BowmanGerald I. Ladimer

Samuel S. HindsMayor Daniels