The Greenwich Observatory is the place of science that Mr. Verloc decides to blow up to rouse the middle class of London.
Mr. Verloc's shop is a pornographic shop that also sells stationary products. The shop is located in the front of the Verloc home and is the scene of Mr. Verloc's death.
The International Red Committee is the organization that Mr. Verloc, Mr. Yundt, Mr. Ossipon and Michaelis belong to in the idea of bringing about social change. However, it appears that all the gentlemen tend to do is discuss their political beliefs, not act upon them.
London is where the novel takes place.
The bomb that takes the life of Stevie is placed inside a varnish can, so it can be transported without attracting attention.
