The Prisoner (1955)1955 -

Use of blazing lights in the cell and solitary confinement.

Probing for a "crack" in the Cardinal’s soul, eventually exploiting his pride and hidden self-loathing . The Prisoner (1955)1955

Ultimately, the Cardinal is "broken" not by lies, but by having his own uncertainties and past sins turned against him. The Prisoner (1955) - IMDb Use of blazing lights in the cell and solitary confinement

The interrogator avoids physical torture, knowing the Cardinal's legendary indomitability. Instead, he employs psychological warfare: knowing the Cardinal's legendary indomitability. Instead

Constant questioning and disrupted sleep/wake patterns to weaken the mind.