Model Vanessa Vale seems to have committed suicide, but things take a strange twist when Vanessa returns from a trip alive and well.
When he returns home from a weekly poker game, Mac's dentist discovers a local television news anchor who apparently died of a heart attack.
Mac is en route to a Hawaiian vacation when a fellow passenger is poisoned.
Mac's world is disrupted when a professional assassin named Phillip weasels his way into Mac's personal life.
Mac comes home from his vacation to discover that his apartment was bombed, he's presumed dead and two dead bodies were found inside.
Mac meets a tennis pro in Las Vegas, whose stepson is being held hostage. In exchange, the kidnappers want the necklace she is wearing.
Mac dons a naval uniform to serve as counsel for a lieutenant who claims the man she shot tried to rape her.
Mildred's sister, Agatha, appears on the scene, and the two of them, plus the McMillans, go visit a dying wealthy woman.
While trying to protect Sgt. Enright, Mac takes a bullet and has to have emergency surgery. At the hospital, he witnesses a patient being murdered.
Targeting politicians who are up for election, a blackmailing ring hopes to squeeze some hush money out of the city bigwigs.
The McMillans consider selling their house. Later, an earthquake shakes loose a shocking secret that's been hiding behind the bricks.
A lawyer hires a gunman to follow Mac. When Mac is speaking to a friend's wife on a balcony, a shot is fired at them, leading to tragic consequences.
Mac's eccentric mother insists on helping with a police investigation involving attempted murders on her and one of her close friends.
Mac is surprised when his sister, Megan, shows up and turns out to be engaged to a man who shows every sign of being a con man.
The writer of a book called Cops and Other Crooks is killed on a train that is heading to a police convention.
Mildred, the McMillans' maid, serves on the jury for the trial of a star San Francisco football player accused of murdering one of his teammates.