The parents of a missing businesswoman claim they did not go to the police when she disappeared because they were threatened by one of the men accused of murdering her, a court has heard.
Lynda Spence, 27, has not been seen since April 2011, but she was not reported missing until the following month.
Prosecutors allege that Colin Coats, 42, David Parker, 38, Philip Wade, 42, and Paul Smith, 47, abducted, tortured and murdered her, which the four men deny.
Ms Spence's parents, Patricia and James Spence, told the High Court in Glasgow that Coats came to their home and told them their daughter owed him £10,000 in the days after she disappeared.
Coats was "like a mad man", "banging his hands on the couch" when she got upset and mentioned getting the police involved, Mrs Spence, 56, said.
He apparently told them "I'll get years" if detectives looked into emails and files on his computer, the court heard.
Mr Spence, 68, said: "We discussed the situation about the money. My wife asked if (Coats) knew where Lynda was and he said he didn't.
"My wife got all upset and then he started losing the rag. She was saying that if Lynda owed him money then she was going to the police.
"Coats's reaction was to start banging the couch and saying 'You will not be getting any police. If the police get involved I'll get years'.
"He said 'Don't forget, I've got UDA people and London people'. It was a threat."