Episode 9

Missing Live asks viewers for their help to find some of the UK's disappeared. Working with police forces and the UK charity Missing People, the series reveals how they try to discover the whereabouts of the thousands of people who go missing every year.

In the studio, presenter Louise Minchin talks to family, friends and experts, exploring the heartbreaking stories of people currently missing. While, new for this series, Rav Wilding meets those who have been safely found, telling their incredible stories.

For the coming week's episodes, a different guest reporter joins a person who has previously gone missing to retrace their steps as a missing person. These eye-opening films reveal what goes through the mind of a missing person before, during and after their disappearance.

On this programme: Dominic Littlewood meets 18-year-old Zac who ran away in London more than 100 times from the age of six.

And 42 years after she disappeared, the family of Maria Aldridge are still not giving up hope that someone will be able to tell them what happened to this student nurse when she simply vanished.