Pig's Head

There are good cops, there are bad cops ... and there is Pufferfish, aka Detective Inspector Franz Heineken.
Pufferfish, (Contusus brevicandus): Body moderately short, pectorals rounded. Slow swimmer. Scavenger in the mud, at home in the murky shallows, where is roots out and feeds on detritus. Inflatable body able to bloat and even explode under extreme provocation.
A severed head rolls out of the rubbish in a crowded Tasmanian caravan park, and the hunt is one for the killers ... and for their victim, a man no-one seems to miss, a man no-one wants to know.
As Pufferfish digs deeper, he runs straight up against mainland law and order ... and the smell of corruption grows.