You can find " Rate of Exchange " on several major streaming platforms: The complete series is available for subscribers.

In Season 4, Episode 21 of , titled "Rate of Exchange," the high-stakes battle for Scylla reaches a fever pitch as Michael Scofield is forced to make an impossible choice between saving his brother, Lincoln, or the woman he loves, Sara Tancredi. Key Plot Developments

C-Note and Sucre reunite in Chicago. C-Note reveals he is working with a mysterious benefactor (later revealed to be Paul Kellerman) who claims he can help the brothers gain total immunity if they can provide Scylla.

The episode is available for individual purchase or as part of Season 4 on platforms like Amazon Prime Video, Apple TV, and Google Play. "Prison Break" Rate of Exchange (TV Episode 2009) - IMDb

Availability varies significantly by region, so check your local catalog.

In many international markets (via the Star hub), Prison Break is part of the standard library.