Answer: Detective Karyl got his leads on potential suspects in Monster by going to his "stoolies," or informants, for information. As he cross-examines Karyl on the witness stand, the defense attorney Briggs puts it to him that Karyl skipped the investigation and went straight to his informants. The implication is that Karyl engaged in sloppy police work that damages the credibility of the case against Steve.
Explanation: If he's going to get Steve acquitted, his defense attorney Briggs is going to have to undermine the credibility of the prosecution's case. This, he hopes, will sow enough reasonable doubt in the minds of the jury to make them reject the charges against Steve. As the prosecution's case is...