The jury in the Suzanne Pilley murder trial have retraced her last known steps before she went missing.

The bookkeeper disappeared as she made her way to work on May 4, 2010 and her body has never been found.

On the third day of the trial of David Gilroy, the court visited Thistle Street in Edinburgh where the 38-year-old was last seen.

Gilroy, 49, denies murdering Ms Pilley on the day she went missing, along with six other charges.

On Wednesday, the jury were taken to Princes Street, where Ms Pilley got off the bus to walk to work. They then made their way passed Sainsbury’s on Rose Street before going to the offices of Infrastructure Management on Thistle Street.

Earlier, the court heard how Ms Pilley did not turn up for work last May. One of her colleagues, Helen Liddell, told the court she became worried when her friend was not in the office by 9am.

She said Ms Pilley had been late before but she usually phoned ahead to say she would not be on time. At around 10am, Ms Liddle said she became "slightly concerned" about her colleague.

She said that she and colleagues were ringing Ms Pilley’s mobile phone number and land line to see if they could get in touch with her.

She said: "There were several occasions in which Suzanne was late. But she always phoned in to tell us that she was going to be late. I had e-mailed the finance director to say that Suzanne was not in and we were trying to get in touch with her."

At 10am, David Gilroy approached her and asked about Ms Pilley’s non-appearance. Ms Liddle said he appeared to be agitated and was playing with a set of keys at the time.

She said: "He was rattling a set of Allan Keys with his hand. He was distracted. He actually wasn't looking at me when he was asking the question."

During the day, Ms Liddle said she got in touch with Ms Pilley’s parents but they did not know where their daughter was.

The police were called and Ms Liddell accessed Ms Pilley’s emails to see if there was any clue as to where she was.

She told the court she was "very surprised" by the contents of emails between Gilroy and Ms Pilley. She had not been aware of any relationship between the two.

She said: "I discovered emails from David Gilroy, to and from Suzanne. They were having an affair, a relationship."

Prosecutor Alex Prentice QC asked: "Were they explicit in any way?" Ms Liddell replied that they were.

The murder charge alleges Gilroy assaulted and injured Ms Pilley by unknown means in Thistle Street, or elsewhere, resulting in her death.

Prosecutors also allege Gilroy attempted to defeat the ends of justice, taking various steps to avoid detection, arrest and prosecution over the alleged killing.

Gilroy, from Edinburgh, denies all the charges against him.