Adventurers plops, ripe for the grabbing

You live in a town with TV drama cops who always toe the line just enough to catch the criminal at the last minute; a rich couple who always stumbles into crimes and winds up solving them; a mystery novel writer who draws inspiration from real mysteries she happens to solve, and draws inspiration to solve those mysteries from her writings; a DA who sometimes solves crimes he winds up prosecuting, and always gets a conviction unless he's up against one of the ENTIRE FIRM of criminal defense lawyers who are famous for catching the real culprit in every murder case they take, who in turn have on the payroll a ridiculously good detective agency that can practically find anyone or anything they're asked to find.

You need to get away with a murder.