They were appalled by his idea of making a spy service out of a scattershot collection of Wall Street brokers, Ivy League eggheads, soldiers of fortune, ad men, news men, stunt men, second-story men, and con men.
a thief, especially one who climbs into buildings above ground level
Heceleme
a thief, es·pe·cial·ly one who climbs in·to buildings a·bove ground lev·el