The Trek Files welcomes back visual effects veteran Stuart Ziff for a firsthand trip into the making of Star Trek IV: The Voyage Home. This time, the documents are original production call sheets from April 1986, detailing the now-legendary "B-Tank" shoot where the Klingon Bird-of-Prey splashed down into San Francisco Bay with George and Gracie the humpback whales.

Stu recalls the practical filmmaking wizardry behind the scenes: giant wave machines, lightning rigs, whale effects, and an enormous outdoor water tank built on the Paramount lot. Along the way, he shares stories about building a mechanical whale eye (for the wrong side of the whale), experimenting with blue dye for the tank water, and watching old Hollywood effects crews create movie magic in real time.

Larry and Stu also circle back to Star Trek: The Motion Picture and Stu's experiences during the turbulent Robert Abel & Associates era, including a revealing memory involving a young Paramount executive named Jeffrey Katzenberg.

It's a fond look back at the kind of filmmaking that required wind machines, carbon-arc lightning effects, scuba divers, towels, and "wetsuits for cast and crew."

Plus: Stu discusses the new documentary being produced about his life and career, and how fans can help support it.

Documents and additional references

• Star Trek IV production call sheets, April 18–24, 1986
• Stuart Ziff documentary campaign: Indiegogo – The Stuart Ziff Documentary
• Reference: Star Trek IV: The Voyage Home
• Reference: Leonard Nimoy

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Before Star Trek: The Motion Picture reached theaters, its visual effects production was already becoming legendary… for all the wrong reasons.

This week on The Trek Files, Larry Nemecek welcomes visual effects veteran Stuart Ziff for a firsthand account of the chaotic early days of TMP production under Robert Abel & Associates. Using internal memos and legal correspondence from 1977 and 1978, Larry and Stu trace the rapidly escalating budget, the mounting pressure from Paramount, and the growing realization that the ambitious effects work was spiraling out of control.

But this isn't just a story about production disaster. Stu shares what it was actually like inside Abel's experimental effects operation during a revolutionary moment in Hollywood filmmaking, where engineers, artists, and filmmakers were inventing techniques on the fly in the years between Star Wars and the digital era.

Along the way, Stu reveals how some of his work survived the production shakeup and made it into the finished film, including contributions to the unforgettable V'Ger probe sequence aboard the Enterprise bridge.

It's a candid look at one of the most turbulent creative periods in Star Trek history, and a reminder that sometimes cinematic magic emerges from absolute chaos.

Documents and additional references:

• December 6, 1977 legal correspondence regarding Robert Abel & Associates' agreement for Star Trek: The Motion Picture.
• May 17, 1978 Paramount memo objecting to Robert Abel & Associates' revised visual effects budget.
• Guest: Stu Ziff
• Reference: Star Trek: The Motion Picture
• Additional reference: the upcoming Stu Ziff documentary crowdfunding campaign at Indiegogo – Stuart Ziff Documentary Project

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What if Star Trek had spun off into a full-blown sitcom starring Lwaxana Troi?

To kick off Season 15 of The Trek Files, Larry Nemecek welcomes actor, writer, comedian, and Star Trek: Lower Decks star Tawny Newsome for a deep dive into an early-1990s pitch centered on Majel Barrett Roddenberry's Betazoid ambassador.

The document up for discussion is a never-produced sitcom concept built around Lwaxana Troi; equal parts fish-out-of-water comedy, family chaos, and larger-than-life Trek energy. Together, Larry and Tawny unpack why the pitch feels both very of-its-time and strangely ahead of its time, especially now that Star Trek comedy has found new life through projects like Lower Decks.

As someone who has not only starred in Trek comedy but also developed her own comedic Trek ideas, Tawny brings a unique perspective to the conversation: what makes sci-fi comedy work and how Gene Roddenberry's world always had room for humor alongside the philosophy and adventure.

It's a fascinating look at a road not taken in Star Trek history and a reminder that sometimes the weirdest ideas in the archive are the most revealing.

Documents and additional references

• ca. 1992 sitcom pitch centered on Lwaxana Troi and a proposed Star Trek comedy spinoff
• Guest: Tawny Newsome
• Reference: Lwaxana Troi
• Additional reference: Star Trek: Lower Decks

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Before she was Tasha Yar, she was Lieutenant Commander Macha Hernandez.

For the Season 14 finale of The Trek Files, Denise Crosby joins Larry Nemecek to revisit her original 1987 audition sides for Star Trek: The Next Generation, including early character descriptions that reveal a very different version of the Enterprise's security chief.

Denise first read for Deanna Troi before Gene Roddenberry made a pivotal switch, reshaping the role of Macha Hernandez into Tasha Yar to fit Denise's strengths. In this week's episode, Denise reflects on the audition process, her favorite scene between Troi and Yar that was never filmed, and what those early creative decisions revealed about the direction of TNG.

She also shares memories of those uncertain early days of production, the risk of launching a syndicated sequel to an iconic series, and the emotional complexity of stepping into (and eventually stepping away from) such a historic role. Along the way, Denise speaks movingly about loss after the Palisades fire, resilience, fandom, and what it means to revisit Star Trek decades later.

It's a revealing look at how a character evolves, how casting can reshape canon, and how even discarded script pages tell the story of Star Trek's creative DNA.

Documents and additional references

• Star Trek: The Next Generation Casting Character Bios & Audition Sides (January 30, 1987)

  Original description of Lieutenant Commander Macha Hernandez and early security chief character concepts.

• Star Trek: The Next Generation Pilot Casting Sides (February 11, 1987)

  Troi/Yar audition scene never filmed for TNG.

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In this very special episode of The Trek Files, actor Robin Curtis joins us to revisit a little-known chapter in Saavik's story, one that never made it to screen. Drawing from a pair of early Star Trek IV: The Voyage Home script drafts, we explore a scene that implies Saavik is pregnant with Spock's child, a narrative thread begun in Star Trek III but quietly dropped by the time the final film was released.

Robin shares warm memories of working with Leonard Nimoy, the late Harve Bennett, and her fellow castmates, as well as a few eye-opening truths about the unpredictability of Hollywood. Plus, she discusses her return to the role of Saavik in OTOY's Unification, and we recreate the pivotal, never-filmed scene between Kirk and Saavik.

It's an emotional, candid, and deeply human conversation about legacy, missed opportunities, and what it means to carry a character with you for decades.

Documents and additional references:

• First Draft (August 23, 1985): Conversation between Kirk and Saavik revealing her pregnancy by Spock.

• Second Draft (November 18, 1985): Subtle reference via McCoy's line: "I'm a surgeon, not a pediatrician."

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Before Star Trek: Discovery's final season sent its crew in pursuit of ancient secrets, Carlos Cisco had already taken inspiration from one of the most profound episodes of The Next Generation, "The Chase." In this week's The Trek Files, Carlos returns to explore the thematic connections between the 1993 TNG episode and Discovery's modern narrative arc. With Larry Nemecek, he discusses how "The Chase" influenced the creation of the alien species Progenitors and how its ideas about shared ancestry and unity resonated with the story of L'ak and the Breen in Discovery Season 5.

Document and additional references: Star Trek: The Next Generation episode "The Chase," final draft script (revised Feb 4–10, 1993)

Written by Ronald D. Moore & Joe Menosky, directed by Jonathan Frakes.

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This week, we're joined once again by Cash Edwards, who shares an intimate look at his longtime friendship with Star Trek: The Next Generation producer Herbert J. Wright. Their relationship, and shared history with Gene and Majel Roddenberry, sparked a bold attempt to revive one of Gene's most personal concepts: The Questor Tapes. In 2004, Herb, Cash, Rod Roddenberry, and a team that included Mike Okuda and Jules Urbach put together a new pitch for Questor—a project updated for the post-9/11 world but still driven by the timeless Roddenberry themes of evolution, ethics, and survival. From detailed series bibles to pilot treatments and fan outreach, Cash walks us through the chaotic early years of TNG, the roots of Questor, and the bittersweet story behind its final pitch.

Document and additional references: Questor promo revision 10 - 2004

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This week on The Trek Files: warp coils, dilithium chambers, and a whole lot of gamma rays.

Returning guest Rick Sternbach joins Larry Nemecek once again for a lively exploration of Star Trek: The Next Generation's scientific backbone. Using early technical memos and a classic 1987 warp engine sketch, Rick walks us through how the team brought real-world physics into the heart of the Enterprise-D's design and when they just had to make it up.

From working with Los Alamos physicists to devising the ejection system for the warp core, Rick shares stories of how he and Mike Okuda grounded the show's tech in reality while still serving the drama. Ever wonder why deuterium goes on top, antimatter on the bottom, or how a photon torpedo really works? This one's for the technobabble lovers and science fans alike.

Documents and additional references:

• "TNG Warp Engine Concept Sketch" by Rick Sternbach, February 18, 1987

• Excerpt from the internal Star Trek: TNG Technical Primer, May 1, 1989

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