The Quiet Room

From Hulk Wiki

David learns that the star doctor at a sanitarium for the insane is subjecting his patients to unethical mind control operations. When discovered, David is placed in a straight-jacket himself without an ally to turn to. His safety, the safety of the other patients, and that of a staff doctor lie in the power of the Hulk.

Comments: Solid episode that reminds me a lot of One Flew Over The Cuckoo's Nest. It "builds up" a little too quickly in spots, but still manages to provide a solid, if not sad story-line.