S4.E1 ∙ The Infernal SerpentTue, Jan 2, 1990An environmentalist professor is mugged and later dies of a heart attack after an attack on campus just prior to a controversial debate.7.8/10 (910)Rate
S4.E2 ∙ The Sins of the FathersTue, Jan 9, 1990The managing director and heir apparent to a venerable family-owned brewery in dire financial straits is found drowned in a vat of his own ale.7.7/10 (819)Rate
Top-ratedS4.E3 ∙ Driven to DistractionTue, Jan 16, 1990After two beautiful women are stabbed to death a month apart by the same killer, the only connection between the pair is their car dealership.8.1/10 (887)Rate
Top-ratedS4.E4 ∙ Masonic MysteriesTue, Jan 23, 1990Morse finds himself framed for murder by an unknown mastermind and suspended as Lewis is seconded to DCI Bottomley, who is in charge of the case.8.3/10 (1K)Rate