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CIA Season 1 Finale: Colin Glass Faces the Ghost of His Past

CBS’s CIA used season one’s penultimate episode to reveal the identity of the mole and to introduce a character thought to be dead. More surprises are in store when the first season wraps up with episode 12, “Broken Glass,” airing on Monday, May 18, 2026 at 9pm ET/PT.

“Broken Glass” Plot: After the identity of the mole is revealed, Colin and Bill race to stop a nefarious operation from covering up intelligence theft. Also, the team tracks down Colin’s old partner, Toni. The season finale was written by Mike Weiss and directed by Ken Girotti.

Tom Ellis stars as CIA Agent Colin Glass, Nick Gehlfuss stars as Special Agent Bill Goodman, Necar Zadegan plays Deputy Chief of Station Nikki Reynard, and Natalee Linez is CIA Analyst Gina Gosian.

Tom Ellis as CIA Case Officer Colin Glass and Nick Gehlfuss as Special Agent Bill Goodman in ‘CIA’ season 1’s finale (Photo: Mark Schafer © 2026 CBS Broadcasting, Inc)

CIA Season 1 Synopsis, Courtesy of CBS:

When by-the-book FBI Special Agent Bill Goodman (Gehlfuss) is loaned out to a clandestine CIA/FBI task force, he finds himself teamed up with secretive and roguish CIA Agent Colin Glass (Ellis). Together they will work covert operations in New York, uncovering international plots, terrorist cells, and geopolitical secrets.

Bill will learn the rules of this murky world on the fly as Colin leads him deeper into spy games where only one thing is clear—their work keeps America safe, even if no one will ever know what they did in the shadows.

Jeremy Sisto as Assistant Special Agent in Charge Jubal Valentine in the season finale (Photo: Mark Schafer © 2026 CBS Broadcasting, Inc)
Tom Ellis as CIA Case Officer Colin Glass and Nick Gehlfuss as Special Agent Bill Goodman in episode 12 (Photo: Mark Schafer © 2026 CBS Broadcasting, Inc)
Tom Ellis as CIA Case Officer Colin Glass and Nick Gehlfuss as Special Agent Bill Goodman in the season 1 finale (Photo: Mark Schafer © 2026 CBS Broadcasting, Inc)
Nick Gehlfuss as Special Agent Bill Goodman in the season finale (Photo: Mark Schafer © 2026 CBS Broadcasting, Inc)

Rebecca Murray: Journalist covering the entertainment industry for 23+ years, including 13 years as the first writer for About.com's Hollywood Movies site. Member of the Critics Choice Association (Film & TV Branches), Alliance of Women Film Journalists, and Past President of the San Diego Film Critics Society.
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