The killer(s) took away the corresponding 26th bullet case...
The Coroner, and the police knew about the existence of the 26th bullet that was left embedded in the skull of one of the child victims, and it follows that they also knew about one missing bullet case from the scene! Yet, they tried to bury this valuable piece of ballistic evidence, by claiming that 25 shots had been fired, there were 25 bullets recovered, 25 corresponding bullet cartridge cases, and that the victims had 25 bullet wounds...
The existence of the 26th bullet, is a problem to the case that was brought against Jeremy Bamber..
It suggests in the strongest terms imaginable that whoever was responsible for shooting the victims dead, did not intend to make it look like Sheila Caffell killed herself, after she supposedly shot dead the other four victims!