This case study discusses the legal situation over liability in different scenarios involving negligence, strict liability, and volenti non fit injuria. It includes four case studies and their analysis, covering issues, rules, applicability, and conclusions. The subjects covered include Purtill v Athone UDC, Ryland v Fletcher, Jones v Festiniog Railway co, Roles v Nathan, and Imperial Chemicals Industries Ltd v Shatwell. The document type is a case study, and the type of assignment is not mentioned. The course code, course name, and college/university are not mentioned.