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Margo Harshman continued acting after playing Alex Jensen, Sheldon Cooper’s assistant, on The Big Bang Theory. Her later credits include the recurring role of Delilah Fielding on NCIS, along with appearances in several other television series and films. The latest NCIS episodes located for her are from 2025; the available listings do not confirm a newer project or explain her private life.
What was Margo Harshman’s role on The Big Bang Theory?
Harshman played Alex Jensen, a young assistant hired by Sheldon. Apple TV’s U.S. episode listing identifies Harshman as the guest star in Alex’s first listed episode. TVmaze records four appearances for her in season six, across 2012 and 2013: TVmaze’s Margo Harshman credits and Apple TV’s U.S. page for Margo Harshman.
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What did she do after the sitcom?
She became a recurring face on NCIS
Harshman later played Delilah Fielding on NCIS. TVmaze lists 21 appearances in the role. Its episode records include “Killer Instinct,” dated April 14, 2025, and “Irreconcilable Differences,” dated April 28, 2025; the latter listing is marked uncredited. The count and episode dates are credit-database information, not a statement from the actor or the show: TVmaze’s episode-level credits.
Other television and film credits
Her listed television work also includes Betas (four episodes), Bent (six episodes), and a guest appearance on How I Met Your Father in 2022. Other titles in her credit listings include Bones and CSI: Crime Scene Investigation. Film credits listed by TV Guide include Love on the Vines and Toxin; the same page includes Exposure, which Wikipedia’s filmography dates to 2023. That year is a secondary-source listing, rather than a production-source confirmation. See TV Guide’s Margo Harshman credits.
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What is Margo Harshman doing now?
The latest Harshman television entries located in the cited episode listings are the two NCIS episodes from April 2025. CBS’s official series page listed NCIS season 24 in October 2026, but that is a status update about the series—not evidence that Harshman appears in that season: CBS’s official NCIS page. Newer work by Harshman is not confirmed by these listings.
Those credits establish that she continued working as an actor after The Big Bang Theory. They do not show that she retired, quit acting, or left the industry for a particular reason, and they do not establish what she is doing in her private life.
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- Genre: TV Comedy
- Number of Discs: 39
- Number of Tracks: 0
- Playback Duration: 6397
- Director: Howard Morris^Aaron Ruben
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