Complex sentence: Retaining the power of a constable, Hitchen racketeered brothels through his assistant, so it was him to usher Wild from making his living with proceeds of prostitution and as a bailiff's assistant to the fully fledged thief-taker.
Split into simpler sentences: Retaining the power of a constable, Hitchen racketeered brothels through his assistant. It was him to usher Wild from making his living with proceeds of prostitution and as a bailiff's assistant to the fully fledged thief-taker.