An Eye For An Eye

An eighteen year old girl is found raped, murdered and dumped on an industrial estate in London's East End. Following a six week trial her killer is found not guilty and is releasrd from custody. The next day he is found floating face down in the Regent's Canal.Another case for DCI Ray Hawkins and his team from Stepney Green. But where do they start looking for suspects when half the poplulation of London wanted him dead.