Ghost pirates bring chaos to all of New York City, blending the character of an old 17th-century pirate port with the present-day metropolis. The Ghostbusters follow Captain Kidd's psychokinetic trail to his newly reformed, lavish 17th-century mansion. There the team finally comes face to face with the dreaded but perhaps misunderstood captain to resolve the supernatural crisis that has overtaken the city.
Captain Kidd: The ghost of historical privateer William Kidd, whose ambiguous legacy has been a thread throughout the series. Issue #4 stages the direct confrontation with Kidd and offers the series' answer to the question of whether he was truly a pirate or a victim of circumstance. He alludes to his execution in 1701 (page 6) and to King William III, who reigned from 1689 to March 1702 (page 7).
Kidd's Ghost Pirate Army: The spectral pirate crew whose rampage through New York City forms the issue's opening set piece. Their presence transforms Manhattan into a visual mix of modern city and 17th-century pirate port.
Cursed Saber of Captain Kidd: The supernatural weapon central to the series' plot, carried through from Issues #1 through #4.
Cover A by Ethan M. Aldridge features Phoebe Spengler. A ghost ship reflected in the lens of her glasses on the cover parallels a similar shot on page 9 of the issue.
Cover B by Monika Sznajder depicts Captain Kidd and members of his family. The same portrait composition appears within Kidd's mansion in the issue itself.
On May 23, 2025, August 2025 solicitations were revealed, confirming that Issue #4 would release on September 3, 2025, and teasing a twist when the Ghostbusters confront Captain Kidd.
On August 28, 2025, a five-page preview was posted ahead of the release.
