At around 11:30pm, Mr Chandler left the Waratah Street party to buy some cigarettes. It was also his unacknowledged intention to visit another party, that of a friend, Ken Buckley, at 2 Phoebe Street Balmain.
Unable to find an open shop, he ranged further and further from the Chatswood party, eventually deciding to drop in at the Balmain party. It was more of Mr Chandler's sort of party, with over 100 people present, and perhaps a less formal atmosphere. He arrived at about the time that people were singing "Auld Lang Syne".
He chatted with a friend, Victor Stewart Smith, but the person he wanted most to see was a woman named Pamela Logan. Mr Chandler and Ms Logan were having an affair, and Mr Chandler obviously wanted to spend some time in her company.
Nobody at the party noticed them leave, but they left together. Pamela Logan had only recently obtained her driving license, and so was concerned about the New Year's traffic. Geoffrey Chandler drove a very distinctive silver Vauxhall, with a canvas bonnet and aluminium frame. A 1924 model, it was considered vintage even in 1962. Ms Logan followed behind him.
Pam Logan followed Geoffrey Chandler back to the former's house at 125 Darlington Road, Darlington, where he remained for about half an hour. He then returned to the Chatswood party, where he arrived at around 2:30am. He left the Waratah Street house slightly before 4am, and remained seated in his car, smoking a cigarette, for between 2 and 5 minutes. He then left alone.
Having left, and being alone, he decided again to visit Pam Logan. He went via the Sydney Harbour Bridge, where he was delayed for several minutes. The toll keeper, Darrell Lonsdale, was discussing an accident with a tow truck driver. The time was 4:35am.
Ms Logan was asleep when Mr Chandler arrived, but agreed to go with him to Granville, where Mr Chandler was to pick up his children. Leo Francis Powling saw Mr Chandler in his car at the intersection of the Great North Road and Parramatta Road at about 4:50am. Mr Powling commented to his wife that the woman with Mr Chandler was not Mrs Chandler.
Mr John Sherry also saw the distinctive silver Vauxhall of Mr Chandler. The car in which he was travelling overtook the Vauxhall near a bus depot at Burwood going towards Burwood Road. Minutes later, at 4:55am, Mr Sherry stopped at a church for Mass, and the Vauxhall drove past, heading west.
Mr Chandler dropped Pam Logan off several hundred metres from the home of the Morphetts, Margaret Chandler's parents. He arrived there at around 5:30am, made some idle chat, before Mr Chandler left with the children. They arrived back at Pam Logan's place in Darlington at about 6:30am. Mr Chandler had made it clear that the Chandler's Croydon home would be available to Margaret and Dr Bogle, and so he refrained from returning.
By 10am the children were getting restless, so he took them and returned home. Margaret was still not home, and so he went to bed. He was awoken by knocking on the door at 1pm. It was the police.