No Accounting for Murder (1987)

Jessica is visiting her nephew, Grady, who has a job working as an accountant at an investment firm. He likes the work and is very busy and working long hours, even if there is supposedly a ghost in the building. He returns to the office late one evening and finds his boss, Ralph Whitman, dead. To top it off, there's also an IRS auditor sniffing around looking into one of the firm's investment funds, Neptune Ventures. Grady becomes the prime suspect in the case but Jessica works with police Lt. Timothy Hanratty. She soon learns that Whitman's wife visited him at the office on the evening he died. Then there's the supposed ghost in the building which is more than just people's overactive imagination. Jessica sorts it all out.