Originally Aired: December 7, 1948
Philo Vance #22, "Star Studded Murder Case," brings the gentleman detective into the world of astronomical ambition and deadly rivalry. At a banquet held by the International Astronomical Society, Dr. Humphrey J. Kent receives a prestigious medal for discovering the first new planet since Pluto. However, the celebratory atmosphere quickly turns tense when Lloyd, one of Kent's former colleagues, confronts him with explosive accusations. Lloyd claims that Kent stole his research notes and took credit for a discovery that rightfully belongs to him after seven years of dedicated work. He references their collaboration with a woman named Diane and makes it clear that Kent's theft has driven him to thoughts of murder.
As Lloyd's anger intensifies and his threats become more explicit, the stage is set for violence among the stars. The young astronomer's rage over his stolen achievement threatens to overshadow the glittering ceremony, and his menacing final words about a bullet suggest that someone at this prestigious gathering may not survive the night. Philo Vance must navigate the competitive world of scientific discovery to uncover the truth behind the planetary claim and prevent astronomical ambition from turning into cold-blooded murder.

Originally Aired: November 30, 1948
Philo Vance #21, "Blackjack Murder Case," opens with a heated confrontation at an exclusive rest home where something sinister lurks beneath the surface of compassionate care. Miss Westcott desperately pleads with the facility's director, Ward, to release her wealthy Aunt Alice, insisting her family has wrongfully committed the woman to gain control of her fortune. Ward, presenting himself as kindly and concerned, refuses and orders the niece off the premises, claiming her aunt is perfectly content.
The tension escalates when Ward's chief assistant, Al Durant, arrives for a meeting. Durant has been receiving complaints about his rough treatment of the patients, but he turns the tables on his seemingly benign employer. He bluntly accuses Ward of running a prison disguised as a rest home, where unwanted relatives are warehoused while their families plunder their wealth. Durant wants in on the racket, seeing through Ward's grandfatherly facade to the darker operation beneath. Ward's response is carefully measured as he suggests they discuss the matter further that evening, setting the stage for a confrontation that promises deadly consequences.

Originally Aired: November 23, 1948
Philo Vance #20, "Tree Trunk Murder Case," finds the detective and District Attorney Markham heading to the peaceful lumber town of Northville for a much-needed vacation weekend. As they board the train, Markham expresses relief that no murder cases will interrupt their fishing trip, while Vance remains characteristically skeptical about finding such tranquility. Meanwhile, in Northville's logging operation, tensions simmer between mill owner Bill Avery and his workers, particularly Frank and Johnny. Bill's romantic entanglement with Doris becomes a flashpoint when her protective brother Johnny confronts him about his refusal to marry her after five years of courtship.
The situation turns deadly when Bill Avery is found crushed beneath a fallen tree at the logging site. While the scene initially appears to be a tragic accident, Frank and Johnny quickly realize something more sinister is at play. Their cryptic exchange suggests they know the truth but intend to keep it hidden. As Vance and Markham arrive in the seemingly quiet town, they remain blissfully unaware that their peaceful vacation is about to become entangled in a carefully concealed murder in the lumber camps.

Originally Aired: November 16, 1948
Philo Vance #19, "Heavyweight Murder Case,"
Mike Daggett stands on the brink of realizing his dream: a shot at the heavyweight championship of the world. His manager Sam Billings believes Mike is a cinch to win against the current champ, but Mike finds himself torn between ambition and love. His girlfriend Billy Stanley desperately wants him to quit boxing before it destroys him, and she extracts a promise: if he doesn't win the title, he'll leave the ring forever. Meanwhile, the sinister Silk Morgan, who manages the champion, summons Sam to his office with a proposition to fix the fight. When Sam refuses to make Mike throw the match, Silk physically threatens him and ominously warns that Mike will go down one way or another.
As the fight approaches, Mike makes a fateful decision to lose deliberately to satisfy Billy's wishes. However, when Sam reveals Silk Morgan's threats and the criminal conspiracy backing the champion, Mike's pride is ignited and he vows to win honestly. A mysterious woman calls District Attorney Markham, warning that a dangerous mob will do anything to prevent Mike from winning the title.

Originally Aired: October 12, 1948
Philo Vance #14, "The Cover Girl Murder Case,"
In the cutthroat world of high fashion modeling, tensions reach a boiling point when jealousy and blackmail collide. Sugar Keene, the top photography and fashion model in the country, discovers that her boyfriend, prizefighter Slugger Davis, has been seeing fellow model Betty Downs. Meanwhile, photographer Stevens is being blackmailed by Sugar, who holds compromising letters that could destroy his marriage. As modeling agent Al Bennett arranges assignments for his stable of girls, including a crucial Hollywood department store shoot and an evening fashion show for Mr. Douglas, the personal conflicts threaten to explode.
When Sugar and Betty arrive for their photography session with Stevens, the atmosphere crackles with hostility. Sugar helps Betty with her makeup despite their rivalry, insisting that business is business. But when Slugger shows up to see Betty, Sugar issues a chilling warning to both her romantic rival and her wayward boyfriend. As Stevens prepares to photograph the models, Sugar coldly collects her weekly blackmail payment, threatening to expose his secrets. The volatile mix of jealousy, extortion, and ambition creates a deadly situation that will soon require District Attorney Markham to call in Philo Vance.

Originally Aired: October 5, 1948
Philo Vance #13, "The Bulletin Murder Case,"
Reporter Eddie Harkins receives what seems like a routine assignment from her editor Mike: get an interview with the renowned private investigator Philo Vance. But before Harkins can reach Vance's office, she's found stabbed to death in the back of a taxi cab, a knife plunged into her heart. District Attorney Markham brings the news to Vance, whose secretary Ellen worries that murder is getting too close to home. The only lead appears to be Harkins' previous story about concert pianist Lillian White, who allegedly inherited half a million dollars and was once married to a mysterious man named Joe McGuff.
As Vance and Markham begin their investigation, the case takes a darker turn when the taxi driver who discovered Harkins' body is also murdered in the same manner. Mike dispatches reporter Eddie to dig deeper into the Lillian White connection, while a threatening phone call from the supposedly dead Joe McGuff himself reveals that secrets from the pianist's past may hold the key to both killings.

Originally Aired: September 28, 1948
Philo Vance #12, "The Argus Murder Case," opens with Philo Vance returning home in the early morning hours after an evening out with District Attorney Markham. Upon arriving at his apartment, Vance encounters Edgar Walters, a desperate man who has been waiting for hours outside his building. Walters explains that his wife, a compulsive gambler, went to an offshore gambling ship owned by Lucky Saunders earlier in the evening but never returned home. With gambling operations shutting down at 2 a.m. and Mrs. Walters still missing at nearly 4 a.m., her worried husband fears something terrible has happened.
Despite the late hour, Vance agrees to investigate and heads to the gambling ship to discover what became of the missing woman. What begins as a simple missing person case promises to evolve into something far more sinister as Vance prepares to board Lucky Saunders' vessel and uncover the truth behind Mrs. Walters' mysterious disappearance.

Originally Aired: September 21, 1948
Philo Vance #11, "The Backstage Murder Case,"
District Attorney Markham arrives at Philo Vance's office with an unexpected guest: Doris Janell, the star of a play at the King's Theater. Miss Janell has received a chilling anonymous note threatening her life if she performs the following evening. The message is direct and ominous: "If you play your role in the theater tomorrow night, you will be dead before morning." Though Vance's secretary Ellen Deering initially suspects the visit concerns routine business, the situation quickly proves far more serious.
Vance immediately recognizes the gravity of the threat, though he suggests it might be the work of a crank. Miss Janell, understandably shaken, has already made her decision—she will not take the stage tomorrow night, unwilling to gamble with her life. Vance instructs her to keep any further communications secret and to report them only to him. As the investigation begins, the question looms: is this merely an empty threat, or does someone truly intend to commit murder in the theater?

Originally Aired: September 14, 1948
Philo Vance #10, "The Blue Lady Murder Case," a mysterious and dangerous woman known only as "the lady in blue" arrives in town, and her reputation for bringing trouble—killings, bank holdups, and kidnappings—precedes her. District Attorney Markham summons detective Philo Vance to his locked office, where informer Ricker warns them about this tall, dark, striking woman who always wears blue. The lady in blue wastes no time forcing her way into the local rackets, confronting gangster Danny Claxton and demanding to be his partner. When Danny refuses, violence erupts as her bodyguard Tony shoots Danny in the arm.
Undeterred, the lady in blue continues her campaign, targeting Madame Marie's dress shop and demanding a percentage of all purchases. She manipulates Danny by playing on his attraction to her, but when he tries to get physical, she slaps him and humiliates him. Danny swears revenge, but before he can act, he's found murdered—stabbed in his own apartment. Now Philo Vance and Sergeant Heath must unravel whether the beautiful woman in blue is a cold-blooded killer or something more complex.

Originally Aired: September 7, 1948
Philo Vance #9, "The Midget Murder Case,"
Theatrical manager Billy Edwards is shot during rehearsal with his vaudeville troupe, which includes Colonel Tim the midget, trapeze artist Louise, human giant Andy Anderson, and magician Duke Miller. When District Attorney Markham discovers the tiny two-inch French pistol used in the shooting, he calls in Philo Vance to investigate. Edwards lies unconscious in the hospital, unable to identify his attacker, while Vance keeps the manager's condition secret from the newspapers and his suspicious performers.
As tensions rise among the troupe members, Duke Miller tries to convince Louise to team up without Edwards, hinting at romantic feelings and making veiled threats about revealing Edwards' relationship with her. The protective Colonel Tim fetches the gentle giant Andy Anderson to defend Louise from Duke's advances. When Vance arrives to question the group, he warns them that evidence will soon send one of them to prison. The case takes a darker turn when Markham and Sergeant Heath discover Mrs. Edwards' body stuffed in a trunk, strangled by someone with powerful hands.