They carried on listening. When asked if her husband was faithful to her, Justine’s voice changed again. She sounded childlike as she said in a sing-song voice that she herself had often been a very naughty girl. This had driven Charles to become obsessively jealous.

Everyone in the room was astonished at the sound of Justine giggling, seeming to enjoying repeating how much her infidelity had tortured her husband. She said it made him insanely jealous and he started stalking her. On one occasion he threatened her lover, who ended up throwing the weeping Charles into a swimming pool, fully-clothed. Foxley was humiliated by the experience.

Miller exchanged one tape for another. They listened to Justine’s ability to switch effortlessly from being shamelessly promiscuous to a doting wife. She used a warm, maternal voice as she explained in detail how everything in their lives stabilized when she became pregnant. She made the choice to give up her career and take care of her daughter and her husband, who then formed the partnership of Foxley & Myers.

They continued to listen for another half an hour as Justine described their happiness in buying their wonderful property in Barnes, and how much their beloved daughter meant to them. She then discovered that Charles was using prostitutes, and even described an occasion when he had been with a prostitute who had later been found murdered. He had been terrified that he would be exposed in the press, and Justine had protected him by giving him a false alibi.

Miller turned off the tape. ‘We know someone else was convicted of the murder, but it’s interesting that Justine seems to have a compulsion for repeating how she had protected her then-husband.’

Miller looked around the table. ‘Does anyone have any questions? If not, I’d like to give you the appraisal that the FBI profiler put together after analyzing the tapes.’

Miller waited a moment, then carried on. ‘Justine Harris had a number of psychiatric problems, evidenced by the medication she was taking, the suicide attempts, and her stays at the Priory. She clearly has a manipulative side to her. Although she has attempted suicide three times, in each instance she made sure that someone would find her. She has benefitted financially from her ex-husband’s will, inheriting not only his shares in the agency but also the property in Barnes and the flat in Kensington. In the interview she discussed her ability as an athlete and spoke of being a proficient tennis player and skier. In my estimation, at almost five foot ten, she appears to be a very fit woman.’

Jane was surprised when Spencer raised his hand. ‘Do you mean that Justine Harris was physically capable of the murder of her husband?’

‘In my estimation,’ Miller replied curtly.

‘So, she is suspected of hitting her husband over the head,’ Spencer continued, ‘dragging him to a bathroom, cutting his throat, then lifting him and dragging him to the bed—’