The mail has just been delivered, and a package arrives for Gildersleeves. Leroy is impressed by the detective set that was delivered, and thinks it’s for him. Gildersleeves explains that after nabbing that whistling bank robber a couple weeks ago, he decided to try his hand at being a detective.
He agrees to let Leroy be his junior assistant as the kids head out the door for school. Gildersleeves digs in, and tries out his fingerprint powder, which doesn’t make Birdie happy at all. Later at Peavey’s, Gildy is eager to handle any unsolved crimes. At first Peavey thinks it’s just a joke, but he doesn’t have any crimes, although he breaks his routine from his signature catch phrase , “Well, I wouldn’t say that.”
At home, Gildy tries to analyze Marjorie’s handwriting. Word has gotten around, and Judge Hooker pops in to poke fun at Gildy, and is almost serious in getting Gildersleeves first case. Leroy rushes in with news of the old Willoughby house, and claims it’s haunted. Though he doesn’t believe in ghosts, Gildy sees it as the chance to put his detective skills to work, and prove to Leroy that there are purely natural causes behind the things that were seen there.
As the spooky noises begin to raise some doubts, it’s time for the commercial which Birdie helps to deliver.
Next morning, Gildersleeves tells Marjorie about the noises, and wierd things happening in the old Willoughby house. There is something peculiar going on, but when Gildy spreads the word on the ghosts, nobody believes him. Floyd the barber may not believe him, but offers a practical suggestion. He thinks it’s a counterfeiter who has set up an operation.
Seeing such a thing as over his head as a detective, Gildy takes the idea to the police chief. It’s all going to be up to Gildersleeves to do the footwork, so he and Leroy return to the Willoughby house to poke around. At least Leroy wants to go, but Gildy drives out on his own, listening to the radio, and catching a detective drama as he goes.
Though a little unsettled from the drama, punctuated by gunplay, Gildy goes bravely on. At the house, he is comforted too know that the police chief has at least believed him enough to help poke around. The chief waits outside to nab any bad guys that may try to escape, but sends Gildersleeves in to flush them out.
Gildersleeves sneaks, he gets scared of the spooky noises, he rushes in to find… well just listen and find out. This is too good to spoil.