A woman gets amnesia after falling off a cliff; when she is found, they realize her husband must be somewhere in the forest, also injured.
A reckless driver injures a little girl, then her father is paid off not to press charges; Dan learns that the father was the main suspect in an old bank heist, and the loot was never found.
When a highway patrol officer is found dead, it looks like a hunting accident, until Dan finds a marijuana leaf in his pocket.
An abandoned car belongs to a novelist whose psychiatrist reveals that he's temporarily deranged from pain medication and is acting out his latest mystery story, playing the part of the killer.
Forgers are passing checks in communities, then vanishing without a trace; Dan works out their pattern, pinpointing their next strike but the crooks escape in traffic.
When a gem collector has a heart attack on the highway, his car is impounded; check reveals that valuable, uncut diamonds are missing, and a highway patrol officer is the only one who had access to the car's trunk.
Two safecrackers hide in a truck to rob a manufacturer's safe overnight. The driver, their cohort, drives them away the next morning.
Posing as a salesman, a man lines up wealthy prospects in motels; then his two female accomplices, posing as hitchhikers, relieve the victims of their money.
In a tungsten mine, counterfeiters hide their plates in nitroglycerin, packed in suitcases when a gun-crazyman grabs the suitcases and flees, unaware of the explosives.
Motorcycle-riding armed robbers elude Highway Patrol roadblocks by loading their bikes into a closed truck driven by their leader.
Because of his wife's fears, Patrolman Ed Wylie resigns from the force after fellow officer Jerry March is killed in the line of duty.
Two brothers hijack a new-car carrier, planning to sell the cars to get cash to purchase a farm; when the driver dies from injuries sustained in the hijacking, they make a panic-stricken attempt to dispose of the evidence.
An escaped convict abducts his estranged wife and forces her to help him elude the Highway Patrol.