Exposed #9

When a brilliant professor at Marlboro Technical Institute is found dead in his locked laboratory—door bolted from within, a suicide note at his side—Detective Lieutenant Ed Sutton smells murder beneath the staged scene. The stolen secret papers on a deadly new explosive point to one of four people who knew about Trimble's discovery, and Sutton must untangle the web of threats, alibis, and resentments to expose the killer who engineered the perfect locked-room crime in "Scientific Murder."

Bill Avery's casual stroll takes a dark turn when a hit-and-run driver forces him into a car—only to discover he's been taken hostage by Sue Martin, a desperate woman willing to use his life as leverage to save her brother from a death sentence for murder. As Bill pieces together the details of the crime that condemned Jeff Martin, he begins to suspect the real killer may be far closer to home than anyone realized, and the evidence points to a shocking betrayal within Sue's own family.

Col. George Sandor guards a famous physicist imprisoned in a remote village, but his weakness for gypsy music—and the fiddle master Gypsy Bronya—blinds him to danger lurking in his own household. When an American spy infiltrates his ranks posing as a maid, she sets in motion a plan to use Bronya and his legendary fiddle to secure the professor's escape.

When a small-town armored-car robbery nets $47,000, the mastermind Chet Kulp thinks he's covered his tracks—until a stool pigeon warns him the cops are closing in. Desperate to establish an alibi, Kulp enlists a forger named "Kite" Elwick to doctor a hotel receipt, but one careless detail unravels the entire scheme and sends the whole crew tumbling toward justice.

June Flagg trades her dreary desk job for the thrills of stunt flying, catching the eye of pilot Dick and his fiancée Connie—but her rapid rise to fame as a stunt girl catches someone else's attention too, someone who'll stop at nothing to eliminate the competition. When June's parachute fails during a performance, Dick and the police must uncover who tampered with it before another tragedy strikes.