Valentine's fingerprints could not be obtained because it was claimed that he had been burnt in the accident.
Shadzkelowitz said his assessors told him of their suspicions about the claim and he started investigating.
"I decided to interview the beneficiaries when I heard from the investigating officer of the accident that they were investigating the identity of the person who was found in Valentine's car."
He said he interviewed Cecilia at her flat in Krugersdorp.
"During the interview‚ I realised that she was not being honest. She said that the deceased's wedding band was found at the scene and I found that this was not true."
He said Cecilia had also lied about the circumstances of the death of Valentine's wife‚ Mikeila. She claimed Mikeila was killed by Zimbabweans and they had been deported.
In an audio recording played in court‚ Le Roux and Cecilia can be heard crying in a telephone call to a Discovery Life employee when they logged a claim for Valentine's death.
A video clip of an interview Shadzkelowitz had with Cecilia was also played in court. In it‚ Cecilia claims she had been Valentine's beneficiary long before he got married.
Earlier‚ Linda le Roux‚ a former employee at Die Herberg Hotel in Krugersdorp‚ told the court that Valentine had stayed at the hotel for four months. The period includes the time when he had died in the car accident.
She said Valentine had booked in under the name Jacque and had stayed at the hotel alone. "He booked in on December 15 2015. It was a Tuesday."
Valentine would extend his stay and whenever he left the hotel he would always wear a hooded top. "He never went out without his hoodie‚" Le Roux said.
The case continues on Monday.