The police were also convinced that it would have been possible for Wallace to murder his wife and still have time to arrive at the spot where he boarded his tram. This they attempted to prove by having a fit young detective go through the motions of the murder and then sprint all the way to the tram stop, something an ailing 52-year-old Wallace probably could not have accomplished. The original assessment of the time of death, around 8 pm, was also later changed to just after 6.30 pm, although there was no additional evidence on which to base the earlier timing.