So the cops shot Sheila not once but twice? She was a right tough women Sheila, she battered and killed Neville, killed everyone else, wrestled with the cops in the kitchen and gets shot under the chin, somehow manages to run upstairs and gets shot again with a different rifle while police stage managed her suicide? Makes you wonder why they wanted to stage manage a suicide when she attacked the police in the kitchen and murdered all her family?
Taff notices that the rifle with silencer attached is too long and Sheila could not have shot herself, so he orders Stan to remove it and hide it, so Stan hides it and does as he is told, the two of them are not bothered what everyone else thinks,it doesn't matter they are risking their whole career to cover up for someone, there is only about 30 other people know about this silencer being on the rifle anyway. So a meeting is held and everyone is told what to write nudge nudge wink wink Sheila committed suicide.
Then low and behold the bloody relatives find the silencer that had been hid, they notice blood on it and take it to the police. So it's wasn't the relatives fault after all, anybody else would do the same thing, they are in the dark and don't know that Jones and Jones are behind it, so Jones and Jones send the silencer off to the Lab for tests realise Sheila's blood is in the silencer and panic, " were done" says Taff, "were not" says Stan we can Blame Bamber. Taff doesn't want to go along with this because that would be lying and it was Sheila who committed suicide he knows the truth. Hang on a minute Taff the police shot Sheila sas Stan, can't we just frame Bamber says Stan, yes but that's not the truth says Taff, Sheila committed suicide with two shots from the police. So even though Taff new the truth he was lying all the time?