They're reuniting more mums, dads, sons, daughters, brothers and sisters and telling even more extraordinary and heartbreaking tales of love and loss.
A ground-breaking case features in episode one when we meet Cliff, who found out he was adopted during an argument with his mother when he was eight, and has never felt part of a family.
He's been searching for his birth mother for years, but as the programme begin to help, another applicant to the show, Sue, is also looking for her mum. Even though she was raised by loving parents, she now wants to find the woman who gave birth to her.
It's not long before striking similarities are found between Sue and Cliff's stories – is it just a coincidence? Or are these two people looking for the same mother, making them brother and sister?
Long Lost Family, ITV, 9pm
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