Now revealed Ace Frehley’s cause of death

Author Benedetta Baldin - 11.11.2025

Ace Frehley died from blunt force injuries to his head following an unintentional fall, according to a medical examiner’s findings, as reported by lambgoat.

The 74-year-old former KISS guitarist fell in his studio and sustained a stroke, subdural hematoma, and fractured skull, according to TMZ. Frehley showed no indications of recovery despite being put on life support and having a hemicraniectomy in an effort to reduce brain swelling.

In the end, his family decided to stop life support. At the time of the report, toxicology findings were still pending. At the age of 74, Frehely passed away on October 16, 2025.

Before his death in October, Ace Frehley had been creating new music for over ten years. He has been working on a new book project in recent years, and it will be published in 2026. The late Kiss icon and writers Ken Sharp and Julian Gill have been working on “Aceland: Artifacts and Memories of a Rock ‘n’ Roll Life” for more than two years. The upcoming book, which is presently more than 550 pages long, includes new interviews with the guitarist for the book in addition to many additional interviews with people from throughout his career.

’ve known Ace for many years through doing my official Kiss projects and also having the incredible thrill of him playing a guitar solo on one of my records, “ Rock Show,” from my Beauty in the Backseat album. – Ken Sharp

Since Frehley accepted the original idea, the book’s scope has evolved, as the author explains.

We were speaking on the phone during the course of an interview for a project and the idea hit me about doing a guitar book with Ace and he responded very enthusiastically but over time that guitar book became much more music-centic. So the focus of this project, which will be structured in an oral history format, will be going deep in all aspects of Ace’s musicality, starting with an exhaustive section on his pre-Kiss bands, a section on Kiss and then [his activities] post-Kiss. We never wanted this to be a posthumous release, but it will certainly frame his musical legacy in a very positive way. It’s not a dirt book and there’s so much new ground on his pre-Kiss bands.

Both writers have authored multiple volumes and written a great deal about the band. After co-authoring “Kiss: Behind the Mask: The Official Biography” in 2005, Sharp collaborated with Gene Simmons and Paul Stanley on “Nothin’ to Lose: The Making of Kiss (1972-1975)” in 2013.