Quincy, M.E. (1976)

S7E21 The Unquiet Grave

When Quincey unexpectedly encounters an ex-girlfriend with whom he had a messy breakup years prior, he becomes embroiled in a mystery following the death of her husband. Determined to uncover the truth, Quincey dives into the investigation, working to unravel a sinister scheme that holds the key to identifying the murderer.