PROT is a patient at a mental hospital who claims to be from a faraway planet named K-PAX. His psychiatrist tries to help him, only to begin to doubt his own explanations.


Iain Softley


Gene Brewer (novel), Charles Leavitt (screenplay)
3 nominations. See more awards »





Cast overview, first billed only:
Kevin Spacey ... Prot
Jeff Bridges ... Dr. Mark Powell
Mary McCormack ... Rachel Powell
Alfre Woodard ... Dr. Claudia Villars
David Patrick Kelly ... Howie
Saul Williams ... Ernie
Peter Gerety ... Sal
Celia Weston ... Doris Archer
Ajay Naidu ... Dr. Chakraborty
Tracy Vilar ... Maria
Melanee Murray Melanee Murray ... Bess
John Toles-Bey ... Russell
Kimberly Scott ... Joyce Trexler
Conchata Ferrell ... Betty McAllister
Vincent Laresca ... Navarro


PROT is a patient at a mental hospital who claims to be from a faraway planet named K-PAX. His psychiatrist tries to help him, only to begin to doubt his own explanations.

Plot Summary | Plot Synopsis


Change the way you look at the world. See more »


Drama | Mystery | Sci-Fi

Motion Picture Rating (MPAA)

Rated PG-13 for a sequence of violent images, and brief language and sensuality | See all certifications »

Parents Guide:

View content advisory »

Did You Know?


Prot says he his from the binary star system of Agape and Satori. These are certainly poetic appellations by the writers; "Agape" is the Greco-Christian term for transcendent unconditional love, whereas "satori" is a Japanese Buddhist term for enlightenment, or self-understanding. Of the few hundred or so stars with proper given titles (as opposed to a star-catalog number), none have those names. See more »


At 1:29 in the movie, when Dr. Powell drives from the airport to Guelph, which is supposed to be in New Mexico, it shows him viewing the Park City arches at Arches National Park in Moab, Utah. See more »


[On why he always wears sunglasses]
Prot: Your planet is really bright.
See more »

Crazy Credits

After the credits, there's a view of the stars and then Dr. Mark Powell looks through the lens of his telescope as if he is looking for the stars of K-PAX. He walks in his yard, and the movie ends. See more »


References Simon (1980) See more »


Rocket Man
Written by Elton John and Bernie Taupin
Performed by Elton John
Courtesy of Mercury Records Ltd. (London)
Under license from Universal Music Enterprises
See more »

User Reviews

More people should know about this movie
17 September 2019 | by JackCowart34See all my reviews

I can't believe I had never heard of this movie before I came across it. I mean, how have I not heard about a movie starring masterclass actors like Kevin Spacey and Jeff Bridges? The dialogue between these two characters was written extremely well. It's not often you can have a movie where there's this much sitting and talking between two charachters and not get bored. With this movie it's the exact opposite, you actually get sucked into the conversations because of how interesting they are. Probably my favorite aspect of this movie is the mystery that surrounds this whole dilemma. It keeps your mind active the entire time wondering whether Prot is in fact an alien, or just a man who's disillusioned. At different times they'll give clues to have you leaning one way or the other, but they'll never let you completely make up your mind. Overall, the talented acting and the skillfully crafted writing are what make this movie so enthralling to watch. This is one of those movies that definitely deserves more noteriety than it's gotten.

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Frequently Asked Questions

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USA | Germany



Release Date:

26 October 2001 (USA) See more »

Also Known As:

K-PAX See more »


Box Office


$68,000,000 (estimated)

Opening Weekend USA:

$17,215,275, 28 October 2001

Gross USA:


Cumulative Worldwide Gross:

See more on IMDbPro »

Company Credits

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Technical Specs


Sound Mix:

DTS | Dolby Digital | SDDS


Color (Technicolor)

Aspect Ratio:

2.35 : 1
See full technical specs »

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