OK, I might be having a "stupid" day, but here is what I am trying to figure out:

Is there a way to have an object in the scene (as in within the camera view), which would be invisible, yet cast a shadow onto other objects in the scene?

I know I can disable sadows for an object and I know I could have an object that is invisible, but catches all the shadows, but can I have an invisible oject that casts shadows only?

Thank you and sorry if this is something simple and obvious and I'm just missing it.