The Challenge Season 36, Episode 19 trailer shows what’s ahead for Double Agents finale Part 2 Thu Apr 15, 2021 at 8:17pm ET TJ Lavin has more on the way for the agents in the Double Agents final, set to conclude in Episode 19. Pic credit: MTV In The Challenge: Double Agents, a total of 30 competitors started on a spy-themed season in hopes of making it all the way to TJ Lavin’s final. At stake was a total of $1 million in prize money. By Episode 18, only a select group of competitors were remaining and eligible to run TJ’s final. They got their start under some difficult weather conditions and began their trek to various checkpoints in Iceland.