How to render something (people) in silhouette?

I’m relavively new to Unreal and we at our company (archviz) usually render the people as black silhouettes. This keeps the viewer from focusing on aspects of the people but rather on the architecture. I can’t use simple opacity because you still see the far side of the mesh. I’ve looked around but can’t find exactly what I need. Below is what I’m trying to accomplish. Thanks for any input.