The planet Argolis, around the year 2290. The Argolins live in a huge shielded city, protected from the irradiated wasteland outside. The planet's survival depends on the tourists their Leisure Hive attracts. But a series of horrific passings seems to jeopardise that future - can the Doctor and Romana find a solution?

The planet Argolis, around the year 2290. The Argolins live in a huge shielded city, protected from the irradiated wasteland outside. The planet's survival depends on the tourists their Leisure Hive attracts. But a series of horrific passings seems to jeopardise that future - can the Doctor and Romana find a solution?

The planet Argolis, around the year 2290. The Argolins live in a huge shielded city, protected from the irradiated wasteland outside. The planet's survival depends on the tourists their Leisure Hive attracts. But a series of horrific passings seems to jeopardise that future - can the Doctor and Romana find a solution?

The planet Argolis, around the year 2290. The Argolins live in a huge shielded city, protected from the irradiated wasteland outside. The planet's survival depends on the tourists their Leisure Hive attracts. But a series of horrific passings seems to jeopardise that future - can the Doctor and Romana find a solution?

The desert planet Zolpha-Thura, the 1980s. Giant intelligent megalomaniac cactus Meglos is planning to conquer the galaxy but first it needs the dodecahedron, a powerful energy source currently on the planet Tigella. To get it back Meglos recruits a band of galactic mercenaries and hatches a cunning scheme requiring it to impersonate the Doctor...

The desert planet Zolpha-Thura, the 1980s. Giant intelligent megalomaniac cactus Meglos is planning to conquer the galaxy but first it needs the dodecahedron, a powerful energy source currently on the planet Tigella. To get it back Meglos recruits a band of galactic mercenaries and hatches a cunning scheme requiring it to impersonate the Doctor...

The desert planet Zolpha-Thura, the 1980s. Giant intelligent megalomaniac cactus Meglos is planning to conquer the galaxy but first it needs the dodecahedron, a powerful energy source currently on the planet Tigella. To get it back Meglos recruits a band of galactic mercenaries and hatches a cunning scheme requiring it to impersonate the Doctor...

The desert planet Zolpha-Thura, the 1980s. Giant intelligent megalomaniac cactus Meglos is planning to conquer the galaxy but first it needs the dodecahedron, a powerful energy source currently on the planet Tigella. To get it back Meglos recruits a band of galactic mercenaries and hatches a cunning scheme requiring it to impersonate the Doctor...

Deep space, an unknown time - on course for Gallifrey, the TARDIS passes through a strange disruption. When they materialise, the scanner shows the Time Lord homeworld... but the travellers have passed into the negative pocket universe of E-Space and are in fact on the planet Alzarius, where evolution works very differently...

Deep space, an unknown time - on course for Gallifrey, the TARDIS passes through a strange disruption. When they materialise, the scanner shows the Time Lord homeworld... but the travellers have passed into the negative pocket universe of E-Space and are in fact on the planet Alzarius, where evolution works very differently...

Deep space, an unknown time - on course for Gallifrey, the TARDIS passes through a strange disruption. When they materialise, the scanner shows the Time Lord homeworld... but the travellers have passed into the negative pocket universe of E-Space and are in fact on the planet Alzarius, where evolution works very differently...

Deep space, an unknown time - on course for Gallifrey, the TARDIS passes through a strange disruption. When they materialise, the scanner shows the Time Lord homeworld... but the travellers have passed into the negative pocket universe of E-Space and are in fact on the planet Alzarius, where evolution works very differently...

Still trapped in negative E-Space, the TARDIS lands on an unnamed world to find a society sliding back into feudalism. What is the secret of the Three Who Rule? And what ancient enemy of the Time Lords is stirring again on this world... ?

Still trapped in negative E-Space, the TARDIS lands on an unnamed world to find a society sliding back into feudalism. What is the secret of the Three Who Rule? And what ancient enemy of the Time Lords is stirring again on this world... ?

Still trapped in negative E-Space, the TARDIS lands on an unnamed world to find a society sliding back into feudalism. What is the secret of the Three Who Rule? And what ancient enemy of the Time Lords is stirring again on this world... ?

Still trapped in negative E-Space, the TARDIS lands on an unnamed world to find a society sliding back into feudalism. What is the secret of the Three Who Rule? And what ancient enemy of the Time Lords is stirring again on this world... ?

Nowhere, literally - the Zero Point between the positive and negative universes. The TARDIS materialises in a white void, but the travellers are not alone. A stone gateway, filled with ageing warrior robots and a very strange hall of mirrors, is also in the void. As is a slaver ship filled with the time-riding Tharils, and captained by the increasingly unstable Rorvik...

Nowhere, literally - the Zero Point between the positive and negative universes. The TARDIS materialises in a white void, but the travellers are not alone. A stone gateway, filled with ageing warrior robots and a very strange hall of mirrors, is also in the void. As is a slaver ship filled with the time-riding Tharils, and captained by the increasingly unstable Rorvik...

Nowhere, literally - the Zero Point between the positive and negative universes. The TARDIS materialises in a white void, but the travellers are not alone. A stone gateway, filled with ageing warrior robots and a very strange hall of mirrors, is also in the void. As is a slaver ship filled with the time-riding Tharils, and captained by the increasingly unstable Rorvik...

Nowhere, literally - the Zero Point between the positive and negative universes. The TARDIS materialises in a white void, but the travellers are not alone. A stone gateway, filled with ageing warrior robots and a very strange hall of mirrors, is also in the void. As is a slaver ship filled with the time-riding Tharils, and captained by the increasingly unstable Rorvik...

The planet Traken. The Traken union is a society living in perfect harmony, watched over by the powerful but benign Keeper. But now the Keeper is dying, and he senses a great evil within his protectorate. Can the Doctor help him discover the secret of the Melkur?

The planet Traken. The Traken union is a society living in perfect harmony, watched over by the powerful but benign Keeper. But now the Keeper is dying, and he senses a great evil within his protectorate. Can the Doctor help him discover the secret of the Melkur?

The planet Traken. The Traken union is a society living in perfect harmony, watched over by the powerful but benign Keeper. But now the Keeper is dying, and he senses a great evil within his protectorate. Can the Doctor help him discover the secret of the Melkur?

The planet Traken. The Traken union is a society living in perfect harmony, watched over by the powerful but benign Keeper. But now the Keeper is dying, and he senses a great evil within his protectorate. Can the Doctor help him discover the secret of the Melkur?

Southern England, 1981. Air hostess Tegan's first day on the job does not go as planned when she pulls over by a police box with a flat tyre en route to the airport. Why is the Doctor suddenly interested in genuine police boxes? And what is the terrible secret of the planet Logopolis?

Southern England, 1981. Air hostess Tegan's first day on the job does not go as planned when she pulls over by a police box with a flat tyre en route to the airport. Why is the Doctor suddenly interested in genuine police boxes? And what is the terrible secret of the planet Logopolis?

Southern England, 1981. Air hostess Tegan's first day on the job does not go as planned when she pulls over by a police box with a flat tyre en route to the airport. Why is the Doctor suddenly interested in genuine police boxes? And what is the terrible secret of the planet Logopolis?

Southern England, 1981. Air hostess Tegan's first day on the job does not go as planned when she pulls over by a police box with a flat tyre en route to the airport. Why is the Doctor suddenly interested in genuine police boxes? And what is the terrible secret of the planet Logopolis?