Mysterious disappearances and stories of the searches that helped close the cases.
At 11 years old, Alex thought he was going on holiday. Instead, he vanished for six years.
Chloe Ayling is kidnapped by a criminal gang, and the police operation begins.
Neil pieces together the evidence on the murder of his mother, Sandra Rivett.
Tir Dhondy retraces Sarm's steps before her disappearance from a charter yacht in 2021.
In 2014, in Mexico, 43 students disappeared. What happened, and who is responsible?
The search for vanished children and grandchildren takes a father from Tyrone to Syria.
Reporting on the disappearance or murder of hundreds of Canadian women and girls.
The documentary story of Nazanin, Anoosheh and other hostages held unjustly in Iran.
The heartbreaking search for answers after 19-year-old Cole Cooper vanished in May.
The story of Musa al-Sadr, the Lebanese Shia leader who vanished in Libya in 1978.
The inside story of the search for Nicola Bulley as told by her family and the police.
In separate searches, police hunt for two autistic young men who are at risk of harm.
Two people face trial for the murder of 35-year-old Margaret Fleming.
One phone call changes everything as dark secrets emerge in the hunt for Tony Parsons.
