Randall and Hopkirk (Deceased) (1969)

The House on Haunted Hill (1x9)

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For once, business is booming at the Randall and Hopkirk office. An insurance company hires Jeff to investigate the disappearance of a shipment of diamonds. At the same time a real estate agent hires Jeff to sort out rumors about Merston Manor, a house scheduled to go on the real estate market, being haunted.