The experiment begins where season one ended as the guests are locked into individual black boxes. One guest freaks out and quits before the first elimination treatment even begins, but when it does, the footbed-of-nails has everyone else suffering the agony of da' feet.

Val surprises her guests with a small companion in Solitary. But her kindness ends quickly as the guests' sanity and stamina are tested trying to memorize a twisted message. The winning guest is spared an exhausting dance with a weighted dummy that drags everyone else down.

A child's game becomes the most frustrating test yet as the guests try to steady their nerves and build an impossibly long chain of dominoes. Then Val turns up the cruelty in a treatment that blends the guests' favorite foods together into a vile smoothie that will "throw up" one of them for an exit from Solitary forever.

Val's Solitary Auction puts the guests at each other's throats as they fight over comforts for themselves...and discomforts for each other - before Val's brutal "grump rope" treatment causes another guest to bite the dust.

A treadmill challenge gives their little friends freedom. Then Val uses restraint.

A test of mathematical madness teaches one Solitarian that quitters never win. Then Val spins one guest out of control and out of Solitary forever in Solitary's latest Treatment.

Val puts the remaining guests under lock and key... fifty times over. Then a relentlessly puzzling treatment with lots of ups and downs will help shape the final two.

The final two Solitarians compete in a vicious gauntlet of tests that pushes one to their limit. Then Val's Hammock from Hell promises to destroy one guest and make the other fifty thousand dollars richer.

The nine guests from "Solitary 2.0" meet for the first time to reveal their secrets and share their experiences from their pods. Hosted by Todd Newton.