a prowler up to no good.
Perhaps there was some connection between that wagon and that prowler.
Avoid using an enclosed phone box in the street, as the prowler could trap you inside.
He who writes these lines has long been a prowler about the barriers of Paris, and it is for him a source of profound souvenirs.
What’s the difference between a prowler and a stalker?
"Well now," said the prowler, "is that dead fellow alive?"