Senior Sgts don't wear chevrons. They wear a crown on their epaulets.
Mouth petechiae are not a sign of poisoning. They can occur in diseases like mono or even from oral sex. Seriously bad writing.
For female performers on stage the word BRAVA should be shouted by the audience, not bravo.
Mistake to handle dressing room doorknob barehanded when investigating break in.
It is not explained what Charlie found in Munro's desk.
The character Bill Hobart is frequently referred to as Sergeant but he does not have any rank insignia on his uniform.
The character Charlie Davis is frequently referred to in the dialog as Sergeant while the credits list him as a Senior Constable.