Anticipatory case?? Assuming that your brother applied for an anticipatory bail for himself in a forgery case Instituted by you... you should pursue this case so that his anticipatory bail application is rejected so that the police may arrest him as and when it feels like.
In case the police is not doing its investigation seriously an application under 482 should be filed so that the hc may direct the government go either change the investigation agency or will direct the police to reinvestigated the case.
The fee of lawyers depends upon their standing at the bar....their seniority. It is not necessary to engage a very senior lawyer unless huge sums are involved.
Regards
The hc will issue notice to the state and the state shall explain its side of the story and if the judge is not satisfied with their actions it may grant you relief.