A convicted rapist who gave young girls alcohol, cigarettes and cash to let him film them naked and carrying out sexual acts has been jailed.
William Livingstone was questioned by police about his behaviour as long ago as 1999, but it was not until November 2010 that they gathered enough evidence to bring him to court.
On Monday, Livingstone, 61, admitted sex abuse involving girls as young as four and six years old.
He also pleaded guilty to taking Polaroids and video footage of teenage girls performing sex acts.
The High Court in Edinburgh also heard that in 1969 Livingstone, of McCallum Court, Bathgate, was jailed for three years for raping a woman.
Defence QC Brian McConnachie said Livingstone knew he was heading for prison again but asked for him to remain free while background reports are prepared. Judge Lord Brailsford refused and remanded Livingstone in custody pending sentence in July.
Advocate depute Bruce Erroch, prosecuting, told how Livingstone played sex games with a seven-year-old girl. If she wanted sweets or crisps or clothes, he said, she first had to earn "points" by allowing Livingstone to touch her.
He also rubbed himself against her, telling her: "This is what men do to girls."
The same girl was approached by Livingstone years later and coerced into posing naked for photographs and videos with one of her teenage friends.
The court heard that he began molesting another girl when she was four or five years old. When she was older he would buy her drink and cigarettes and tell her she "owed him".
Mr Erroch described how drunken Livingstone would tell her: "Just let me touch you. It will be just this once."
The offences, dating back to 1992, were committed at an address in Livingston, West Lothian, and elsewhere in Scotland.