Pay-Off #4

A woman discovers her prized jewels have been replaced with fakes and calls in the insurance investigators, but as they dig into the theft, the case takes several unexpected turns—including a clever bit of forensic trickery involving liquid rubber and fingerprints. When the accused chauffeur is brought in for questioning, the detectives realize they may have been looking at this caper all wrong, and the real culprit's identity hits them like a sucker punch.

Two American servicemen hoping to recoup their lost savings enter a high-stakes car race along the French Riviera—but their borrowed vehicle, a legendary racer once piloted by General Henri Vernet, attracts the dangerous interest of a mysterious man working for a museum curator who's eager to acquire it. When Jack Brown and Eddie Kim uncover evidence of sabotage and discover what Derriot is really searching for, they realize the car holds a secret worth far more than the million-franc prize.

Roy Harrington and his sister Toni arrive in Paris chasing riding glory at the prestigious horse show, with help from Jerry Gordon, an amateur sleuth and accomplished riding instructor. But as Toni climbs toward victory, a series of dangerous "accidents" threaten to derail her triumph—and Jerry must uncover whether sabotage is at work before tragedy strikes again.

In the fishing village of Glasbury, two rival fishermen—Nels Bjornlund and Harry Stone—compete fiercely for the affections of Hilda Swenson, who promises to marry whoever brings in the biggest catch. When a tragic accident at sea leaves Harry's boat destroyed and Hilda running off with a smooth-talking outsider named Julo Riker, the two men's rivalry transforms into a shared vendetta. As Riker's body washes ashore under mysterious circumstances, Nels and Harry find themselves the prime suspects in a murder that neither believes the other committed.