I have been having this problem since the 27th october patch. When my Sim who works as a policeman launches a search warrant he almost never finds a suspect corresponding to the clues he has found. Sometimes he does find a match but when arrested the person claims that she is not guilty. Sometimes I will arrest the only person not being a member of one of the families in the game even if that person does not really correspond and she will be the culprit. I have just completely deleted my game and downloaded it again. So it is a fresh game and I have not replaced my mods.
