Marston and Me by Thomson Burtis

During the ensuing three days we saw plenty of it, and finally went through the procedure of inspecting and testing two more Martins. By this time the Martin factory was under heavy guard. The Martins being vitally important -- in fact, indispensable -- for the conduct of the bombing tests, the company was under a heavy forfeit clause in the contract for twenty thereof, and the mere idea that there was dirty work at the cross-roads struck them with panic.

Detectives were rounding up the discharged and discredited employees little by little and each by each. So far no confession had been third-degreed out of the men. The first lot all had alibis.