Tonight, a house in a foul state, a plague of cockroaches, and three bodies being prepared for postmortem.
Sheffield's Environmental Health are called in to tackle a woman who has 23 cats.
Office staff member June Crookes is shocked when she joins her front line colleagues, as a rat dines at a surburban house and an aggressive dog is abandoned by an evicted tenant.
A 26-stone man is found dead at home and three generations of women are evicted from a house they've turned into a health hazard.
A former steelworker has to decide whether to lose his home or his six much-loved but not house-trained cats.
In this final part, a rat man helps out a woman who has a paranoid fear of the furry vermin.