Several tenants, including Dorothy Detling, sued their landlord, C. E. Edelbrock, for damages, alleging that their leased premises were infested with rodents and roaches, were missing screens, and had exposed elec- trical wiring. They also alleged that the heating boiler was defective, that rubbish was strewn in passage- ways, and that the common area stairs were unstable. Does the landlord have a duty to prevent these kinds of conditions from occurring, or are such repairs and maintenance tasks the responsibility of the tenants? If you conclude that the landlord was at fault, must these tenants move out of the premises because they have been constructively evicted? [Detling v. Edel- brock, 671 S.W.2d 265 (Missouri, 1984).]