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.

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

Sally and Mac are sealed in their home by a killer.

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

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

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.

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.

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

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

An old flame enters the picture.

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

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

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

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.

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

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

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

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.

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.

A naval lieutenant facing a court-martial on a murder charge is appointed counsel in the person of Commander McMillan, USNR.

You pays your money, you takes your choice. While on an airline flight, Mac witnesses passengers dying mysteriously.

A valuable necklace under the eyes of Mac and Sally at a masked ball.

A phiz for the fuzz. Sally becomes the prey of a jewel thief out to dispose of witnesses.

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