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"Mudd's Passion" was the 10th episode of Star Trek: The Animated Series. It was produced in TAS season 1 and debuted on 10 November 1973. The episode was directed by Hal Sutherland and written by Stephen Kandel. It was the eighth episode to be novelized by Alan Dean Foster, appearing in Star Trek: Log Three in December 1974.

Harry Mudd returned in this follow-up to "Mudd's Women" and "I, Mudd".


Roger C. Carmel guests as the voice of Harry Mudd, the character he created on the original Star Trek television series. In this episode, the serio-comic villain returns with a love potion that actually works!

Log entries

Episode log entries

Captain's log, stardate 4978.4.
We are approaching the Arcadian star system on a mission to locate an old friend.
Captain's log, supplemental.
Harry Mudd has escaped from the Enterprise, taking Head Nurse Chapel with him, apparently as a hostage. Meanwhile, Mister Spock is acting very strange.

Novelization log entries

Captain's log, stardate 5514.0
We have entered the Arcadian system on a mission for Starfleet regional peaceforce to locate an old friend.
Ship's log, stardate 5514.6
We have located and made preliminary scan of a hitherto unidentified binary system with one marginally habitable world. Preparations are now underway for first advanced survey. Second advanced survey with actual landing party will probably not be carried out this trip, unless some unexpected new factor dictates in its favor.



Episode characters

Arex Na EthChristine ChapelJames T. KirkJohn KyleLoraMarionLyra MayerShiboline M'RessLeonard McCoyHarry MuddMontgomery ScottShu-luftSpockHikaru Suluquadrupedal rock beasttrinocular rock beast

Novelization characters

Arex Na EthBell (Lieutenant)Christine ChapelJames T. KirkJohn KyleLoraMarionLyra MayerShiboline M'RessLeonard McCoyHarry MuddRafeMontgomery ScottShu-luftSpockHikaru Sulurock creature
Referenced only
AmaraAnabellaMax BruchHnistoBiblical MagiFlorence NightingaleNyota Uhura

Starships and vehicles

Episode starships and vehicles

USS Enterprise (Constitution-class heavy cruiser) • groundcarsNCC-1701/3 (II) (armored lander shuttle) • NCC-1701/4 (II) (armored lander shuttle) • NCC-1701/9 (class F shuttlecraft) • NCC-1701/12 (armored lander shuttle) • unnamed USS Enterprise (NCC-1701) shuttlecraft

Novelization starships and vehicles

USS Enterprise (Constitution-class heavy cruiser) • hovercraftMudd's spacecraftunnamed USS Enterprise (NCC-1701) shuttlecraft (armored landeratmospheric flierlong-range scoutclass F shuttlecraft)


Episode locations

Arcadian system (Motherlode) • unnamed planets
Referenced only
Ilyria VIMuddOmega CygniOphiucus VI

Novelization locations

Arcadian system (Motherlode) • unnamed planets
Referenced only
Amusement Park planetDariusIlyria VIMilky Way GalaxyMuddOmega VIIOphiucus VIPrometheus Science CenterSaturnSirius IX

Races and cultures

Episode races and cultures

CaitianHumanEdosian or TriexianUrsinoidVulcanunnamed races and cultures (miners)

Novelization races and cultures

AndalusianCaitianHumanEdosian or TriexianTulliniteUrsinoidVulcanunnamed races and cultures (avianoidmonopedal)

States and organizations

Federation (Peaceforcer) • Starfleet (Starfleet AcademyStarfleet CommandStarfleet Science)

Science and classification

artificial gravitybiochemistrycamerachemistrychronometerclass Mcommunicationscommunicatorcomputercoordinatesdrugecologyengineforce fieldfusion bombgravity field generatorgunhand phaserintercomlaboratorylibrary computermedikitmicrohandlermicroscopemicrotapephaserproberocketsciencesensortransportertricorderturboliftviewscreenwarp drive


Rigelian hypnoidrock creature

Materials and substances

alcoholbloodcoalcrystalduralliumgraniteliquidlove potionmetalopalplasticquartzquartzinescotch whiskysoilstone

Ranks and titles

captainchiefcommunications officercrewmembercriminaldoctorengineerFederation Starfleet ranks (2260s)first officerhead nurselieutenantmedicine manminernavigatornurseofficerpainterphysicianpilotrankscience officersenior officersolicitorStarfleet rankstransporter chiefyeoman

Other references

air regeneration systemangelartificial gravityassignment patchasteroidatmosphereautomatonbankbeambeetlebilliardsbinary starblack holeblue starbridgebrigcavecivilizationcorncreditdesertemotionfeatherFederation lawFederation Pharmaceutical Codefox-dancergalaxygamblinggravityhelmhouridentity cardinternal securitykilometerlanding partylizardlogiclovelynchingmagicMegaspheremeterThe Mikadominingminutemirrormoonmountainmoviemusicmustachenavigational computernebulaneutron starorange starparking orbitquartersradiationrecirculation gridrecreation roomreptilesecondsectorshuttle baysickbaysirenspacespidersports and gamesstarstar systemStarfleet regulationsStarfleet uniformStarfleet uniform (2265-2270)telepathytentaclethree-dimensional chesstransporter roomTriexian guitaruniversevegetation


Related media

Chapel's love for Spock featured in

Mudd also appeared in

Ilyria was mentioned in



Episode images

Adaptation images



published order
Previous episode:
One of Our Planets Is Missing
TAS episode produced Next episode:
The Magicks of Megas-Tu
Previous episode:
Once Upon a Planet
TAS episode aired Next episode:
The Time Trap
Previous story:
Once Upon a Planet
Log Three
Log Three.jpg
Next story:
The Magicks of Megas-Tu
chronological order
Previous Adventure:
Once Upon a Planet
Memory Beta Chronology Next Adventure:
The Magicks of Megas-Tu
Previous Adventure:
Once Upon a Planet
Pocket Next Adventure:
The Magicks of Megas-Tu
Previous Adventure:
Once Upon a Planet
Voyages of the
USS Enterprise (NCC-1701)
(2264 to 2270)
Next Adventure:
The Terratin Incident

External links