Series 1, Episode 1

Peru part 1

The team's first challenge is to cross a raging river.

Series 1, Episode 2

Peru part 2

One of the team goes missing…

Series 1, Episode 3

Peru part 3

Mia is still missing and the group make the gut-wrenching decision to move on.

Series 1, Episode 4

Peru part 4

Howard’s health reaches crisis point.

Series 1, Episode 5

Peru part 5

Howard’s emergency rescue has had to be aborted in worsening weather.

Series 1, Episode 6

Guyana part 1

The team discover the bridge between them and their camp has been washed away.

Series 1, Episode 7

Guyana part 2

A blazing row breaks out and the pressure proves too much for Chris.

Series 1, Episode 8

Guyana part 3

The team have to swim across a 200-metre-wide piranha-infested river.

Series 1, Episode 9

Guyana part 4

An attempt to negotiate some powerful rapids ends in disaster.

Series 1, Episode 10

Guyana part 5

On the final leg of their journey the team begin their final push for the Falls.

Series 1, Episode 11

Kilimanjaro part 1

It’s only day one but one of the team is already on the casualty list.

Series 1, Episode 12

Kilimanjaro part 2

A medical crisis in the night leaves one of the group’s dream in tatters.

Series 1, Episode 13

Kilimanjaro part 3

The team are still reeling from last night’s medical emergency.

Series 1, Episode 14

Kilimanjaro part 4

The team face a punishing climb to16,000 feet above sea level.

Series 1, Episode 15

Kilimanjaro part 5

On the fifth and final leg of their journey, the team fight extreme exhaustion.

Series 1, Episode 16

Arctic part 1

The team arrive in Spitzbergen and are flung in at the deep end.

Series 1, Episode 17

Arctic part 2

Teamwork goes out of the window when the group face their first night on the ice

Series 1, Episode 18

Arctic part 3

The team have spent a sleepless night trying to persuade Rachel to carry on.

Series 1, Episode 19

Arctic part 4

The freezing temperatures have a disastrous effect on 23-year-old Sian’s health.

Series 1, Episode 20

Arctic part 5

With their options rapidly dwindling, the team begin a desperate race for safety