Little Rascals: Hide and Shriek (1938)

Here is a silent 8mm version of the 1938 Rascals short, "Hide and Shriek". It has been retitled "The Haunted House" for this version. Alfalfa is a private eye, and with the help of Buckwheat and Porky, tracks a couple of suspects, Leonard and Junior, who are accused of stealing Darla's box of candy. The two little kids get into the cab of a flatbed truck, so the three sleuths climb in back and hide in a box. Leonard and Junior, however, simply exit the opposite side, unknown to the older boys. It turns out the truck is taking supplies to a haunted house carnival ride, which is where the boys find themselves, but they think they are encountering actual spooks. (Synopsis from TV.com)

Little Rascals: Alfalfa's Aunt (1939)

I once recorded this episode off TV in the late 80s or early 90s, but only caught the tail end of it. The storyline doesn't involve Halloween, but it does include elements that fit the holiday mood. Alfalfa's aunt Penelope is a mystery writer who comes to visit. Alfalfa finds a page from a story she is writing, which is in the form of a letter. It reads:

Dear X,

I have discovered that only my nephew stands between me and the Switzer millions! So like the others, he shall die in agony - tonight - at the stroke of nine!

Believing that his own aunt is planning to murder him, Alfalfa recruits the gang to help protect him from her.