Agar was interviewed in October 1856, while still in Pentonville, by John Rees, the company solicitor for SER; Agar refused to answer any questions, so Rees returned ten days or two weeks later and tried again. In the interim, Agar had heard that Pierce had not kept to his word so, angered by the deceit of his erstwhile partner, he turned Queen's evidence and gave Rees the full details of the crime. Pierce and Burgess were arrested on 5 November. As Tester was living in Sweden he could not be arrested, but he was informed that the police wanted to interview him.