I tell stories, yet I do not speak. I bleed, yet I do not have blood. And in light, my shadows remain. What am i?

If you want to get inside, you'll have to get through me. But I'll be hypnotized If you'll just add a 'd'.

Ring without finger, guard without sword, Silent I circle a vulnerable lord. I drown every footstep that comes without leave, Yet carry no weapons you’d think stop a thief. What am I?

I’m taken whole or crushed for taste, I keep loose metal held in place. I fall from trees, a simple bite, A quiet food in autumn light. I’m what bursts forth when urges race, A wayward shot with questionable grace.

Some say I'm needed to educate and useful for research. Some say I don't do anything useful, and call me a prison. Either way, I'm a place to observe the occupants and entertain the masses.