Mrs. Bolshaw was very security conscious, and the window had to have been opened some time after she returned home from work on the 8th October. The position of the fingerprint indicates that the person it belonged to had pushed the bar of the window in order to open it. Who, then, does this fingerprint belong to and why has that person never come forward or been identified?
Although no evidence had been presented that the scene had been ‘wiped clean’, at the end of summing up the prosecuting barrister asked the jury to consider why John’s fingerprints had not been found on the coffee cup or the brandy glass. In fact, photographs of the scene show a coffee cup on the draining board in the kitchen, and there was a broken spirit glass in the waste bin. This was probably how Mrs. Bolshaw sustained a cut to her finger, which she covered with a sticking plaster. There was blood stained kitchen paper in the kitchen. The probable explanation was that she had washed the coffee cup and the brandy glass, which is when it was broken. But, this question must have put doubt in the minds of the jury although it wasn’t based on any fingerprint evidence presented.