摘要：This study is discussing about the effectiveness of law enforcer of fiduciary crime in the investigation process (case study; Polres Banyumas). This study is purposed to analyze the effectiveness or ineffectiveness of the law enforcer of fiduciary crime in the investigation process faced by the police investigator in the law enforcement of fiduciary crime act at Polres Banyumas.The method of this study approach is using juridical sociology, research descriptive analyzes specification. This study was conducted at Polres Banyumas, the primary data of this study obtained by interviews the Satuan Reskrim Polres Banyumas (Banyumas Police Criminal Unit), the reporting party and reported party of fiduciary crime. Secondary data involves; legislation, literature, the research result of the legal experts, journals and campus. Data obtained by using literature study, served in a systematically and qualiitatively analyzed compiled narrative text.Based of the study result and the discussion towards the research problems in this thesis, concluded as follows, that the investigation of law enforcement of fiduciary crime act at Polres Banyumas had been done but not yet effectively done caused, as follows: (1) The application of criminal sanctions in transferring object of fiduciary collateral does not raising a fear-effect to commit fiduciary crime, (2) The lack of public understanding of fiduciary legislation, (3) The implementation for investigation and supervision towards the case of fiduciary crime act has not yet optimized, (4) The case costs and the amount of investigator personnel are not balanced. The investigation process is constrained because of the legal regulation that have not been firmly related to the execution of fiduciary object collateral and the development of fiduciary crime act practice, cases that been taken care of by the investigator are excessive, the lack of supporting facility in the process of investigation and improvements of public needs. The effectiveness of law enforcement can be accomplished in the investigation process by an improvement the investigator ability, fulfillment of supporting facilities, improvement of supervision of the process of investigation and legal counseling to the public also improvement of the formation of fiduciary unit at the Polres.
