![](https://image.tmdb.org/t/p/original/zvZ5JREzqtr1RzbVtaPgIU0HECX.jpg)
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The Invisible Enemy (1)
Deep space, 5000AD. An Earth supply shuttle is infected by a strange sentient space-borne virus, which quickly spreads to the crew of the refuelling station on the moon Titan. Even worse, the Doctor himself falls victim. But why is Leela immune, and what is the virus's ultimate goal?
![](https://image.tmdb.org/t/p/w300/lg2ZQpxhWLdtkeBUwfqzJ1HpU28.jpg)
![](https://image.tmdb.org/t/p/w300/unhJQWcgh6FPlyCaKXTnSLT1DrJ.jpg)
![](https://image.tmdb.org/t/p/w300/4DESj7hC2SRQdwNg2F22xuFuukj.jpg)
![](https://image.tmdb.org/t/p/w300/h5VdQxpKfS7nKKWHwY55CN0Sm7E.jpg)
Other episodes for this season
![Horror of Fang Rock (1)](https://image.tmdb.org/t/p/w300/iKoVEWSFDYnHz9G56QPL7IJclix.jpg)
![Horror of Fang Rock (2)](https://image.tmdb.org/t/p/w300/cFW1Zcq6Emgh5srdwhOeMZbKsfM.jpg)
![Horror of Fang Rock (3)](https://image.tmdb.org/t/p/w300/kRzlQTf9Jn8p5MlpUcpG0jrkjqg.jpg)
![Horror of Fang Rock (4)](https://image.tmdb.org/t/p/w300/d5hKpkAsW13fQUn4snoEkmWirIp.jpg)
![The Invisible Enemy (1)](https://image.tmdb.org/t/p/w300/zvZ5JREzqtr1RzbVtaPgIU0HECX.jpg)
![The Invisible Enemy (2)](https://image.tmdb.org/t/p/w300/9JS6Eji5QBNRWZTyfdvzXV0C5Jq.jpg)
![The Invisible Enemy (3)](https://image.tmdb.org/t/p/w300/puuDAXANcIRYpRdCo5nOoABRdsy.jpg)
![The Invisible Enemy (4)](https://image.tmdb.org/t/p/w300/9DlJAb2EOamhXmXvd9O7LSk8BsI.jpg)
![Image of the Fendahl (1)](https://image.tmdb.org/t/p/w300/3ruA7e5QsIIfpX5cC7fajoFWiYh.jpg)
![Image of the Fendahl (2)](https://image.tmdb.org/t/p/w300/bhYyrYFmd8cRw7AkxrdjJsHTh11.jpg)
![Image of the Fendahl (3)](https://image.tmdb.org/t/p/w300/zpwc6bBLFOMigfGYYFypBFbGmId.jpg)
![Image of the Fendahl (4)](https://image.tmdb.org/t/p/w300/7lBPMnanWsgacyEvBBJ7u4qduIP.jpg)
![The Sun Makers (1)](https://image.tmdb.org/t/p/w300/hccylr6uxtec2aogkJR4xpNbSsF.jpg)
![The Sun Makers (2)](https://image.tmdb.org/t/p/w300/lk1P0ikcsFeUxoOIDIllM9N5Rt4.jpg)
![The Sun Makers (3)](https://image.tmdb.org/t/p/w300/wvezYUsoB4JQnBUfRlbds5X52ba.jpg)
![The Sun Makers (4)](https://image.tmdb.org/t/p/w300/7rUICNjyfXp0OaGG6SkB4ucV9ku.jpg)
![Underworld (1)](https://image.tmdb.org/t/p/w300/ok7djQq0mba5Ado6Ix8BZ1StBdj.jpg)
![Underworld (2)](https://image.tmdb.org/t/p/w300/1SOEyrZUm22vfYqUSrHDMxvfSt0.jpg)
![Underworld (3)](https://image.tmdb.org/t/p/w300/goW59WFzKh164iXidEq5qHmZHap.jpg)
![Underworld (4)](https://image.tmdb.org/t/p/w300/8AgD7i32qaUvRBYn2MOu5k8eFZt.jpg)
![The Invasion of Time (1)](https://image.tmdb.org/t/p/w300/fzyDg3DLeDtUkzsIBT4AtjG1HZP.jpg)
![The Invasion of Time (2)](https://image.tmdb.org/t/p/w300/poMyVu6uwd5GAbHL8AtqWu9PPD.jpg)
![The Invasion of Time (3)](https://image.tmdb.org/t/p/w300/fwZZNZMCR6JQvvlErc2DdBAQl3x.jpg)
![The Invasion of Time (4)](https://image.tmdb.org/t/p/w300/yazxkV0InF682EwWXXENihwhatb.jpg)
![The Invasion of Time (5)](https://image.tmdb.org/t/p/w300/7xNvTFxq4KEyUZnZYmgVc7aFjV.jpg)
![The Invasion of Time (6)](https://image.tmdb.org/t/p/w300/noV6Xc8pv9oJFIi3zWnizK8kzcq.jpg)