The pig, if I am not mistaken,Gives us sausage, ham, and bacon.Let others say his heart is big—I call it stupid of the pig.(Ogden Nash. From memory so possibly slightly off.)
An investigator sometimes has the feeling that something is off without being quite sure just what it is. Later, it becomes more conscious and the investigator returns to the crime scene (or wherever). This is why the yellow police tape and such remain in place for a while after the initial investigation.
Sam looks unusually jowly here.