Answer:
I move without wings between silken strings. I leave as you find my substance behind
My second is performed by my first. A thief by the marks of my whole might be caught. What am I?
What is easy to get into, but hard to get out of?
Part carbon part water I am poison to the fishes. Many falsely claim my name I am the pause that refreshes.
What goes into the water black and comes out red?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.