The forensic evidence presented at the trial centred on the following five sources:
- Raffle's body - Evidence was found linking Frank to items of clothing on
the body. Rather than suggesting he had been involved in the murder, all the evidence was consistent with
his frequent contact with Raffle, including over that weekend.
- The murder weapon - Although a hammer that probably belonged to
Frank was used to hit Raffle, there is no evidence to suggest that Frank wielded it - and it may not have
been the only weapon responsible for his death.
- The Ford Sierra - No evidence was found to back the claim that the
Sierra had been involved in the murder. All evidence linking Frank to the Sierra is consistent with his
having worked on it over weekend in question and having put some tools in a sack to loan to Wood which
Wood then put in the boot.
- Frank's house - Despite a very thorough forensic examination, as
with the Sierra, nothing was found that was inconsistent with Frank having spent part of that weekend
working with Raffle in his yard.
- Wood's house - The gathering of evidence from Wood provides a stark
contrast to the thoroughness with which forensic evidence against Frank was sought.