A man is done in by his wife, but he's not done yet. Evidently his ghost is unquiet.

A composer is up against it, and Sally's somehow connected to him.

After receiving the Cop of The Year award, Sgt. Enright is accused of the murder of his ex-wife--and the case against him seems air-tight.

The mob abducts Mac and replaces him with a surgically-altered lookalike, to liquidate a squealer in a tightly-guarded hospital.

Sally's next on a maniac's agenda; a psychiatrist assists.

Sally is kidnapped at an art museum. The ransom: a priceless painting owned by Spain that they are unwilling to relinquish. Mac's only clue takes him back to the day he proposed to Sally.

Strange accidents surrounding a thoroughbred horse suggest its owner, an old family friend of Sally's, is a target for murder.

It's off to Scotland to see the laird and the loch, where the game's afoot.

Mildred thinks she's witnessed a murder, and Sally receives a strange gift in the mail: film of a satanic ritual. More gifts reveal someone has it in for Mildred and a yen for Sally.

A suicide investigation reveals the executive had a merger in the works.

A colleague from military intelligence calls on Mac, and is murdered.

Mac's old football squad is being eliminated one by one.

Mac switches places with Claudio Manton, a hood with a striking resemblance, to intercept stolen gold trans-shipped from France via Portugal and Mexico.

The grand prize of the 20th Annual Golden State Rally in Monterey is an antique car collection willed by a late millionaire. Mischief develops into mishaps and worse, until an entrant is killed.

A temperamental tennis champion is suspected of murdering a newspaper magnate who had him suspended.

A WWII intelligence colleague, long since thought to be dead, turns up and is murdered.

Mildred is accosted while serving on a sequestered jury, then another juror is murdered in his locked room.

Mac heads south to a police convention on a train filled with officers, Mildred, and the author of Cops and Other Crooks, who is murdered en route.

It seems that Mac's sister is engaged to a con man out to diddle a mining company.

At Andy Kenesaw's 90th birthday party, an attempt is made on his life, just before a stockholders' meeting of the company he founded with Mac's grandfather years before (Kenemac Alfalfa Corporation, est. 1901) is held to consider a merger bid from Harvest Foods Incorporated.

Commissioner McMillan celebrates an old friend's wedding, but the honeymoon ends when the bride is murdered, and the intended victim may be closer to home.

Unusual interest is shown in the McMillans' house when Sally thinks of selling it. Then an earthquake reveals a body behind the brickwork.

During an election, the city is beset by a fiscal crisis. Politicians are being blackmailed, and Sgt. Enright leaves the force to marry an heiress and work for a private detective agency.

Mac is wounded in a failed drug raid and sent to the hospital, where he sees a patient smothered, and slowly unravels the case.

Mildred and Agatha are named in a will. Heirs start dying, and next to inherit is Agatha, whose investigation runs parallel to McMillan's.